Oh it's live so they can't help but run into the glitches, it's just when they try super hard to make jokes out of even the lame bugs, or ones who aren't usually shy about bitching or criticizing mechanics exclusively brush off broken boss fights and lost pets.

They're professionals so they can act natural whilst doing it, but you see it very occasionally in collaborations where one of them is like "ixnay el itchbay, I can't talk about that bro" when the other starts tearing into a game too much. Like full on Jonah Hill neck-chop meme mode. They can fuck around a bit, but they just can't be outright negative when there's an active business relationship there. It's also easier to see the pattern when you're aware which ones share the same agencies and which ones don't.

But TBH, I don't habitually watch streams live, I'll just skim VODs from a bunch of them for specific games of interest or to keep a finger on the scene, so my character judgements may just be off from low exposure.