The big problem with lemmy is that some niche communities did not migrated so when you Look for example for fairphone news you Look to reddit beacuse lemmy dosent have equivalent. Likewise i havent seen something similar to r/tailsof. You know the niche communities that were the bread and bucket of reddit with the few exceptions ( programers and Linux communities fully migrated and are obviusly standing out beacuse those pepole are always first to move to opensource alternatives )