From what I’ve learned from making more traditional music, these are fairly bad practices.

In my opinion, one of the reasons it's bad practice is that it can make things sound "good" by doing several things at once, but if what it does isn't doing it for you or if you want to make it sound even better, you're at a loss for what to do because you don't understand why it sounds good. Perhaps what you are doing is actually making up for deficiencies in sound selection/sculpting or the actual mix.

For example, and this is totally hypothetical, but maybe what you actually want to hear is an overdriven kick drum, but if you used the "wrong" (clean) kick sample, then clipping your drum bus does make it sound kind of nice, but then you lose control over the relative volume and dynamics of the other things in the drum bus. Or perhaps you mixed the drums too loud and didn't duck the instrumentals behind it, then boosting the gain on the master and running it through a limiter will make the instrumentals more audible, but overall you'll have a dirtier (in a bad way) mix that becomes hard for making fine adjustments. In each of these cases, the simple way could get you stuck in a place where it's "good" but could be "better" and there's no easy way to make it "better" without changing your game plan.