There are lot's of self-proclaimed heretic hunters on the internet and at CC there is no shortage of theses types. To them everyone is a heretic - if you disagree with what they believe about a subject.
There are websites dedicated to the heretic Billy Graham, Billy Sunday, Charles Spurgeon, Charles Stanley, D.L. Moody, C.S. Lewis, John McArthur, Paul Washer, Joseph Prince, Dr. Michael Brown, Justin Peters, Bill Johnson, Martin Luther, John Calvin, Andrew Wommack...etc..basically anyone who is known has a website dedicated to their "heresies".
There are even websites dedicated to the heretic apostle Paul because his epistles "conflict" with some of Jesus' words.
Basically these self-proclaimed heretic hunters have a beef about some thing with what someone else believes and so they are now "heretics".
Their motto is: "If people don't believe some scriptures in the way that "they"do - they are heretics and they try to prove it with "their" version of what the scriptures say.." This is not what we were taught in "my" church or in our whole church tradition.
It's the nature of the beast. Martin Luther was a heretic to the catholic church at the time because for 1100 years prior to Luther they had always "believed" the same way.
Where these types cross the line is when they turn a disagreement that they have with someone doctrinally on a secondary issue and turn it into "So and so is a false teacher and they are in error and a heretic/satanist/controlled by a demon" type stuff.