Not impressive at all. I run just about as many services, plus several game servers, on a Ryzen 5, and most of the time CPU usage is in the low single digits. Most stuff is idle most of the time. Something like a Home Assistant instance used by a single household is basically costless to run in terms of CPU.
Not costless in terms of RAM though, surely?
Ultimately, basically. I have two servers in my homelab, one that is more beefy, which hosts a bunch of stuff (basically everything parent outlined + ), including a DHT crawler, download clients, indexers, databases and a lot more. It's sitting and using 16GB (out of available 126GB) right now. Then I have another which only runs the security system + Frigate + Home Assistant, it's using 2.3GB out of 32GB available.
Web apps like Home Assistant are very light, things like game servers are heavier since they have to load maps etc.