This filter was very controversial, especially because at first it was hardcoded into Lemmy itself, and the devs initially were insistent in keeping it that way. Fortunately they eventually allowed it to be configurable by instance, which is a much more sensible approach. Especially considering other languages and even some english variants. And while most people like you and me appreciate the intent, many are still unsure if this is a good approach to fight the problem. It does seem hard to avoid a lot of silly false positives. I remember someone mentioning being really confused by this "Sremovedew Valley" mentioned everywhere, until they realized it was just Stardew Valley being mangled by the filter.

Wоrd ​fіltеrѕ ​аrеn't ​thаt ​еffесtіvе ​thоugh‚ ​lаnguаgе ​јuѕt ​еvоlvеѕ ​аrоund ​thеm․

Аlѕо‚ ​hоmоglурhѕ․․․ ​Тhеrе'ѕ ​роtеntіаllу ​thоuѕаndѕ ​оf ​wауѕ ​tо ​wrіtе ​bіtсh ​wіth ​Unісоdе ​ѕubѕtіtutіоnѕ․