Why did you end up looking into it?

Cause people online kept saying that one should use it in their homelab. It's mentioned in basically every such post and there are a lot of videos about rpi clusters with k3s. So I assumed it's the way to go.

I basically do the same as you but with Dokploy cause the web ui makes it easier to manage than juggling ssh terminals and remote editing textfiles in an editor from the 19th century.