I used to run flashy DEs years ago. Enlightenment for all those who remember, with all the bells and whistles turned on.
As years went by, I started to remove everything. I now use an automatic tiling window manager with no borders. I actively disable all animations, and I use colors much more thoughtfully (color yes, but only where it is needed), so that by default my laptop looks a lot more like those old screenshots than a today colorful tablet.
I'm now quite pedantic on how text should be rendered the way _I_ want, and it should be the same _everywhere_.
So in a sense, I see why the current look is attractive and my younger-self would approve, but in retrospective the bland-but-consistent look is what I eventually moved on to by choice for a lot of reasons.
The current UI trend in my mind is considerably worse from an UI perspective than what Windows 3.1/95 (and same-era DEs) would offer.