IMHO the persistence of Model M (now Unicomp) worship is a meme. Yes a chunky Buckling Spring mechanism is a very unique and "fun" feel, but that doesn't mean it's actually good to do a lot of typing on in terms of ergonomics or speed. So what of it? It's a novelty item, not the ultimate keyboard.
I'm big into the custom mechanical keyboard hobby (not that that makes my opinion special or anything, ha) and I definitely agree. It's funny, cus a lot of people in the hobby see the Model M as their "holy grail" keyboard. But the more modern keyboards are just so much more comfortable to type on for extended periods of time (whether they are 'ergo' keyboards or not). It's all personal preference, but I think a lot of the love for the Model M is just nostalgia.