You missed the point. Let me rephrase.
They coule add features that makes their instance/own client add things to posts, that don’t work in other clients/instances properly.
This in effect could get some users who just don’t care about avoiding meta, and also FOMO type of users, to switch.
It doesn’t matter if you don’t care, but it’s bad for Lemmy.
On the bright side, turds are soon so big it’s easier to notice