Why is there no performant remote desktop for Mac/Linux?

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I noticed that remote desktop from Linux to Mac (with Remmina) is much slower than Linux to Windows 10. It's definitely RDP on Windows, maybe it's VNC on the Mac. No idea about the performances of a remote Linux desktop because I connect to remote machines with ssh and use only the command line. It's maybe 25 years since I run remote X11 applications to my local server. There are other apps like NoMachine and TeamViewer. I never used them with a remote Mac.

For the slowness of Linux > Mac. I'm not sure if this helps, but I always had better performance from the freerdp2 nightly and remmina next repositories. At least on Ubuntu, looking at the package website for 22.04 freerdp is at version 2.6.0. However 2.8.0 is available in nightly. I've been using the nightly branch for 6 or 7 years now and have rarely ran into issues. In fact our entire company runs nightly due to using the latest bastions and gateways servers that sometimes the version in the main repository do not support yet.

Circa 1995 the physics department I was studying at received a grant from Microsoft and Intel to buy a large number of x86 workstations, first most of them were running Windows NT but the only people who would use NT were another grad student who liked Windows and me who would use vnc to log into a Linux computer without competing for one. That grad student and I argued about many things, one of which was the relative merits of X windows and RDP and he was right about that one. RDP was written with the X Windows experience in mind and it performs much better. Compressors for the X protocol wer