ads cost money to increase users to eventually profit from them later.
how would a decentralized lemmy profit from the increased users.
Any money spent on ads would be better off hiring more engineering resources and improving lemmy for the next time Reddit does something dumb prompting an exodus.
The idea is for some users to pool some money together to buy ads, not for the platform to do it. I guess the idea is that as users, we benefit from the additional content that comes along with more users.