Misskey and the actual Forkeys are in TypeScript and Vue.js. And they all have the same bugs that you can't just simply get rid of.
Iceshrimp.NET is a rewrite of Iceshrimp in C#, that's why it's named Iceshrimp.NET. It promises to get rid of all issues inherited from Misskey because it doesn't have a bit of Misskey left in it anymore.
But maybe we need more rewrites in more languages to satisfy as many people as possible. A Catodon rewrite in Ruby on Rails for Mastodon fanbois and fangurlz, no matter what a chonker it'll end up being. Sharkey rewritten in PHP to satisfy those who like things as easy and lightweight as Friendica & Co. And even more because not few say that both C# and Ruby on Rails and PHP suck.
Or is there anything that doesn't suck at all? Go sucks because Google. Rust sucks because Mozilla. Python sucks because it's Python being Python. And so forth.