I'm curious what you mean. I have been accessing Macs remotely over SSH and VNC for like 20 years and it's always been easy and as performant as the network would allow.

The built in high rez screen sharing between Macs works well too. Through Tailscale I’ve accessed my main Mac from both the opposite coast of the US and from the other side of the Pacific and it works great.

Host resolution automatically matches that of client, image quality is great, framerate is decent, latency is minimal. The host creates virtual screens for the connection so connected screens don’t light up and the machine remains locked to anybody accessing it physically too, which is a nice privacy assurance.