Dude, the church they established there, still stands. We call it Eastern Orthodox today, because we are Western English speakers, and come mainly from a Protestant background.
At the time described in Acts 11:26, they weren't called Eastern Orthodox. How do we know this? Because it tells us what they were called. They "were ... called Christians" (Acts 11:26).
Whatever may or may not have happened at later times and in later generations ("the tradition of men," Colossians 2:8) isn't relevant to the truth, which is found in the Bible. "Beware lest anyone cheat you through the tradition of men ... and not according to Christ" (the Bible) (Colossians 2:8).
8 Beware lest anyone cheat you through philosophy and empty deceit, according to the tradition of men, according to the basic principles of the world, and not according to Christ. (Colossians 2:8)
So in other words, you see yourself above all the denominations,
Denominations, by their very definition, exist in opposition to the teaching of the Bible ("the doctrine of Christ," 2 John 9).
10 Now I plead with you, brethren, by the name of our Lord Jesus Christ, that you all speak the same thing, and that there be no divisions among you, but that you be perfectly joined together in the same mind and in the same judgment. (1 Corinthians 1:10)
about [sic] all the rest of the Christians,
On the contrary, it's not all of the rest who are in denominations, for there are a few (Matthew 7:13-14) of us who believe God (Romans 4:3) about what He says, and therefore do not associate ourselves with denominations and other sources of division (1 Corinthians 1:10).
13 "Enter by the narrow gate; for wide is the gate and broad is the way that leads to destruction, and there are many who go in by it.
14 Because narrow is the gate and difficult is the way which leads to life, and there are few who find it. (Matthew 7:13-14)
3 For what does the Scripture say? "Abraham believed God, and it was accounted to him for righteousness." (Romans 4:3)
and you feel it's your place to make statements of possible 'evilness'?
No, it's a requirement of the Christian faith. (And anything contrary to the revealed will of God in the Bible is evil, by definition. If that's not how you define evil, I'm not sure how it could possibly be defined at all.)
11 And have no fellowship with the unfruitful works of darkness, but rather expose them. (Ephesians 5:11)
24 And a servant of the Lord must not quarrel but be gentle to all, able to teach, patient,
25 in humility correcting those who are in opposition, if God perhaps will grant them repentance, so that they may know the truth, (2 Timothy 2:24-25)
3 For though we walk in the flesh, we do not war according to the flesh.
4 For the weapons of our warfare are not carnal but mighty in God for pulling down strongholds,
5 casting down arguments and every high thing that exalts itself against the knowledge of God, bringing every thought into captivity to the obedience of Christ, (2 Corinthians 10:3-5)
3 Beloved, while I was very diligent to write to you concerning our common salvation, I found it necessary to write to you exhorting you to contend earnestly for the faith which was once for all delivered to the saints. (Jude 3)
Warning others about false teaching or false doctrine is love, because it is love for the truth (2 Thessalonians 2:10). A person who "sees the wolf coming" and doesn't warn others, but "leaves the sheep and flees" so that "the wolf catches the sheep and scatters them" is what the Bible calls "a hireling."
12 But a hireling, he who is not the shepherd, one who does not own the sheep, sees the wolf coming and leaves the sheep and flees; and the wolf catches the sheep and scatters them. (John 10:12)
Wow, good thing you are above all the denominations and can't be called evil yourself!!!
I was evil before I came "to the knowledge of the truth" (1 Timothy 2:4), as were all men (Psalm 14:1-3; Romans 3:10-12) and even now I do not have any righteousness of my own, but that which is from God by faith (Philippians 3:8-9; Romans 3:22).
8 Yet indeed I also count all things loss for the excellence of the knowledge of Christ Jesus my Lord, for whom I have suffered the loss of all things, and count them as rubbish, that I may gain Christ
9 and be found in Him, not having my own righteousness, which is from the law, but that which is through faith in Christ, the righteousness which is from God by faith; (Philippians 3:8-9)
22 even the righteousness of God, through faith in Jesus Christ, to all and on all who believe. For there is no difference; (Romans 3:22)