Earlier quoted context omitted.
I do. I don’t need them when every pixel counts but I think they are useful If not pleasing in many cases. That’s why I created what I believe was the first tiling wm "useless gaps" patch for dwm 10 years ago. Since then, it has been adopted by other wm, i3 being a notable exception. I don’t use a DE, but I guess a little space between those fat bars and backdrop’d windows might help to see through the bloat.
I was referring more to the excessive padding in material design in general, but yeah I'm not a fan of gaps so pairing that with gaps in tilling seems extra bloated to me.
I have yet to see an enjoyable material design app. With the same underlying motivations, I have better appreciation of Apple iOS interface guidelines.