I recently migrated most of my homelab to Proxmox running on a pair of x86 boxes. I did it because I was cutting the streaming cord, and wanted to build a beefy Plex capability for myself. I also wanted to virtualise my router/firewall with OPNsense.
Once I mastered Proxmox, and truly came to appreciate both the clean separation of services and the rapid prototyping capability it gave me, I migrated a lot of my homelab over.
But, I still use RasPis for a few purposes: Frigate server, second Pi-hole instance, backup Wireguard server. I even have one dedicated to hosting temperature sensors, reed switches, and webcams for our pet lizard’s enclosure.