I haven’t really gone through them myself. I think the DVD era more or less burnt me out on “extras” although I still find myself, out of habit, buying blu-rays based on how many bullet points are on the back.
But at some point it occurred to me that for all the weight I give “the extras” on any disc I ever bought, aside from a handful of very prominent examples, I almost never watched them more than once, and sometimes never watched them at all.
There’s a bunch of stuff on the 2011 blu-ray set for Star Wars I’ve never clicked on. That includes some of the deleted scenes.