Go easy on people. It's hard to change, and something like lemmy can be intimidating for people to get on board with. That's ignoring the fact that even if they move they can't force their communities to come with them.
I'm personally happy to see the back of Reddit, and am convincing anyone I can to switch too, but I can understand the challenge for the average user to switch. Hell, even Reddit is a technical step-up for a lotta people. The tech world has forced a paradigm that traps the average user, using the fact it all appears free as the bait. Be angry at big tech, not the ones they swindled.