Yes, but the essential Christian doctrine of salvation through grace by faith alone is so easy to understand that a child can understand it, but the other non-essential doctrines are complex enough for a theologian to drown in it. We need not make so hard to understand to receive salvation that it would or could prohibit a new potential convert from receiving it. I don't believe God is looking for technicalities to keep people out.
I see the need for that, for people who are just learning about Christianity . But after that, all of God's words are essential .
Christ said we live by every word of God. A apostle said, all the words of God are given for edification in righteousness. We should not water down God's word, to appease people. As 2 Timothy 2:15 states here.
God said, my people are destroyed for lack of Knowledge . If we try to dumb Christ teachings down, to appease people. Then Christ will say, get away from me, I never knew you. To those claiming to be coming In His name.
And we see what that approach has done. Do to lake of study, confusion and deception creeps in, and people divide from each other. For years watering and muddying of the Truth, have done major damage to believers .
A Christian will be totally happy with all of God's/Christ teachings, and will not be offended by them. Salvation is good for some one just learning the first principles of Christianity . But after that, its written, we have to move into the meat of God's word.
As Hebrews 5:10-14 (KJV) records
If Christ only taught Salvation, it would be much smaller book. And I believe God did not have time to waste, for people to take the attitude of not getting into the meat of God's word out of fear it might offend people . That's not how Christ or anyone in God's written word taught .If they did, they were not around for very long.