I broadly agree with you in regards to server-class equipment as a whole.

Simply put, your average gamer isn’t going to snag a 16-unit rackmount blade server to game with. Not only is it supidly inappropriate for home use, but it is also wildly out-of-spec with what gaming requires.

However, normal rackmount servers - especially 3U+ units that have a decent number of PCIe slots - can be extracted from rackmount cases and put into eATX cases that can better serve them on a desktop. It’s what I have done before, to great effect. With the right heatsinks and case fans, it can end up being a moderately quiet system. Loud for a consumer system, sure, but nothing like the “Boeing Dreamliner at full takeoff power” that an actual server setup would generate for sound.