Anything new is scary
Reddit is complicated, they just forgot.
The digg users said reddit was ugly and they would never use such an ugly site.
I tried explaining reddit to a diehard forum user, why are all the replies out of order? why are upvotes changing the posting order? this is so complicated!
Don't explain, tell them where to start and how to start. then it explains itself.
I think this is also the cause of the squabbles.io Vs kbin/Lemmy split. Squabbles is like new Reddit, kbin is like old Reddit. And people like what they know
This last sentence is the crux of the matter. People don't like change, but quickly forget that they spent time learning the site that they're so familiar with.