Screwing up is fanning on a point shot leading to a breakaway goal against, or diving to get the puck but accidentally tripping a opposing player and giving them a PP. 99% of the things a player screws up which are forgotten about are due to lack of execution. I mean I gave Sheahan a lot of crap last year for his mistake which handed Chicago a game we were leading as well, but even his mistake was due to a lack of execution. It's something his teammates might've gotten angry at for a few days or few weeks but eventually forgotten about because it wasn't intentional. The other big ones in Oilers history, Steve Smith's own goal and MAB running into Roloson - both were accidental things that happened in a fast moving game.
What Archibald did falls into that 1% of things which are willfully and intentionally selfish. It wasn't about trying to generate momentum with a big hit when we were down in the game (like Wilson often does), or standing up for your teammates in a scrum and getting called for a extra roughing penalty (which Wilson also often does). There was 8 minutes left in a game where all Archibald had to do was play safe, clean hockey for 4-5 more shifts and the Oilers would've been back in the series. He didn't. He got tilted by a slash to his stick and went out of his way to take a stupid, selfish penalty that cost his team the series. He had time to think about what he was going to do (but evidently didn't think). It was premeditated, foolish and unnecessary.
There is a stark difference between what Archibald did and 99% of the rest of what you would call screw ups by a player. Multiple former players-turned-analysts have called him out on this play tonight, and they've been in locker rooms before and know what is and isn't acceptable behaviour. Archibald deserves all the evil eyes, cold shoulders and muted responses he's very likely getting tonight and into tomorrow - and probably for a long time to come.