Regarding grabbing after crouch-cancel, I have found that jump cancelling the grab works really well. Just thought I'd put that here since I was asking about it before.
New question:
Is it bad that I get annoyed when people celebrate after beating me in a game? I don't mean like a tournament game or anything, I mean people that are considered much worse than me beating me in a friendly and then celebrating and announcing to the world that they did so. Sometimes it's even from just taking a stock or two when they normally don't. I don't want to say to them that they aren't improving (cause that's most likely untrue and discouraging people from continuing to play and get better is the last thing I want to do), but getting 1 more stock in some random game when we play like 20 friendlies in a row is most likely not them improving.
1. I'd recommend hold-buffering shield because you can mash A if you are unsure of how long their attack's stun will last, and if you try to grab too early you will hold shield instead of sitting still and getting hit.
2. I don't see how it benefits you to get annoyed by anything your opponent does outside the game. Even if it's not tournament, you're wasting time worrying about their thoughts and gameplay instead of your own. I have had people do similar things against me, but I guess I sort of just chalked it up to them achieving a personal goal. Maybe they did something they have messed up a bunch of times before. Maybe they made it a point to get more excited about their successes in order to promote improvement. Have I ever gotten a little salty that someone thinks they did something well when in reality I was just sandbagging/not focused/insert john here? Of course, but that's a problem with myself, not them. If you don't want people bragging about taking a stock off you, then don't let them take a stock off you... If someone brags about beating you in friendlies where you were testing/practicing stuff, show them your full potential in a MM or tourney set.
When you're talking about people that get consistently 4-stocked, I think getting happy over taking a stock is more a defense mechanism than anything else. If they can't get happy over that stock, then they're going to be miserable the entire time because they're not going to be winning and their improvement may not even be visible over the course of one session.