I share your sentiment at this point. I saw a thread where the one Lemmy dev / admin was talking about how they will not use Cloudflare or other major CDNs for lemmy.ml, and that they host on some minor provider because of privacy concerns. They said they were focusing on optimizing the Lemmy code instead to make it more efficient.
While I understand that and those concerns aren’t wrong, and certainly the code should always be written to be more efficient… at some point it’s going to meet the reality of millions of ex-reddit users hitting them, and they seem wholly unprepared for that. /u/Ruud seems to know what they’re doing with lemmy.world and building it to be able to scale.
Even though I’ve created the /c/Sysadmin sub on a handful of the larger Lemmy servers now, I’m thinking that lemmy.world will be my main going forward.