It’s funny when armchair experts insist that the fediverse won’t catch on because “federation is too hard to understand” when arguably the most widespread communication system on the internet follows the same model
3 points
Well with email if you want emails to come to you you also have to search for it and sign up your email to a list to receive them or give your email to people for them to send you stuff.
In lemmy you need to go to a community finder and find communities you want then you copy their link and paste it in your home instance search bar and hit follow. With email you need to search the web for a sites email list then paste your email in their and say you want to receive their email
