This is very interesting. One other thing I think gets glossed over a lot is that there is "the" Antichrist as you explained, but there are also MANY other Antichrists. The latter are constantly trying to attack the Christian faith by saying they _are_ Christians but behaving very un-Christlike _on purpose_. I think we see a LOT of this happening now.
The Christian conservative movement seems to really have that sort of an outlook. I mean, last year there were some that called out a priest for "the sin of empathy" when she was preaching about taking care of the less fortunate and not laying immigrants to the wayside. Because as we all know, one of the things that Big J disliked was checks notes empathy!
And it's not exclusive to the US. For example here in Finland, this sort of Christian conservatism has a lot of support alongside our far-right government. The Bible being used as a justification for intolerance and hate, which does seem rather ironic considering what Big J was all about.