No, it's not. Perhaps that's an old wives tale from the era (2-3 years ago) when it had bad fs performance and didn't use the native hypervisor directly?
But then, M1 MBP is 25W part and not 180W, it is also silent, unlike the TR. So pick your poison.
I don't know about "Vastly", but it is better and will likely always be better because of the structure of Docker. Docker is by definition, a container that runs atop Linux. Since Linux is already Linux and the Mac has to run Linux in a hypervisor, bare metal Linux is almost always going to be faster.
But, Docker is just a part of the workflow. Dealing with the limits of the Linux Desktop to get better Docker isn't worth it a lot of the time.
That's just your personal preference; I'm using all three (macOS/Linux/Windows 10) and all three are fine for desktop.