There's been a lot of speculation/rationalisation around this already, but one I've not seen mentioned is the possibility of it being at least a little down to a kind of "don't look back" collective arrogance (in addition to real technical challenges)

(This may also apply to the "everything's too dark" issue which gets attributed to HDR vs. SDR)

Up until fairly recently both of these professions were pretty small, tight-knit, and learnt (at least partially) from previous generations in a kind of apprentice capacity

Now we have vocational schools - which likely do a great job surfacing a bunch of stuff which was obscure, but miss some of the historical learning and "tricks of the trade"

You come out with a bunch of skills but less experience, and then are thrust into the machine and have to churn out work (often with no senior mentorship)

So you get the meme version of the craft: hone the skills of maximising loudness, impact, ear candy.. flashy stuff without substance

...and a massive overuse of the Wilhelm Scream :) [^1]

[^1]: once an in joke for sound people, and kind of a game to obscure its presence. Now it's common knowledge and used everywhere, a wink to the audience rather than a secret wink to other engineers.

https://en.wikipedia.org/wiki/Wilhelm_scream

EDIT: egads, typing on a phone makes it far too easy to accidentally write a wall of text - sorry!