The thing about convex, is that sometimes Scar is in trouble, and Cub's twitch chat is like, "Cub! Go help Scar, Cub!". To which Cub just replies with "Nah, There is no need."
And it could read as Cub being dismissive. Why does he not want to help his friend? Does he hate him? But in actuality, it shows that Cub understands Scar exceptionally well, since Scar will often want to complete a task all by himself, even if in process he's whining for assistance here and there.
It's portrayed well in clips like these:
(CLEO and SCAR are playing a Hermitcraft TCG match, with CUB as the game master)
CUB: I think you can survive this... Yeah, you can definitelyー There is a way you can survive this, Scar. That is all I'm gonna say, 'cause I'm the GM, butー
SCAR: You can't get too involved, but you could get involved! If you wanted...
CLEO, clapping and singing to the beat of "Bop" by Elybeatmaker: You can get involved if you wanted!
CLEO: I mean, like. Um...
SCAR: Okay, so I'll get two cards.
CLEO: I'm happy to let you help, Cub. Since this is technically an unofficial match.
CUB: The onlyー Alright, I mean, yeah, Iー
SCAR: No, it's okay. I got this. I got this.
Cub is ready to jump to help Scar any day, any time. But he can read between the lines, and he knows he needs to receive Scar's approval first to actually go and do something.
I appreciate Cub for how respectful he is about Scar's personal autonomy, both verbally (always emphasizing how skilled Scar is; hyping him up when it comes to any of Scar's new projects) and via just leaving Scar alone to sort his own troubles. A really good showcase of Cub's emotional intellegence.