I think it’s just old tribal knowledge that people have turned into a meme at this point, just like people thinking all versions of Linux are so arcane and obtuse, you need to be a master programmer or hacker to be able to make it run without crashing. When I was first starting out with it, around 2009, I remember having somewhat regular issues with my sound and my wifi just randomly deciding I was unworthy of either sound or wireless internet access. That was across distros when I was initially checking things out, as well as across releases of the same distro once I (mostly) settled down.
These days, I can’t remember the last time I had such problems that weren’t either the result of a specific bug that was shortly fixed, or the fallout of something stupid I did myself while tinkering with something and not paying enough attention.
To me, another be part of it is that the British seem to have an awful penchant for giving delicious things names that sound like Victorian euphemisms for something awful. Spotted dick and toad in the hole sound like they would be ways for Victorians to talk about their STIs, and I’m unsure what exactly Gentleman’s Relish would mean, but it strikes me as some sort of medieval form of punishment on the peasants.