Linus needs to make no corrections to his behaviour. His apology was needless.
He only flames those who make dumb mistakes, should know better, keep doing it, and don't respect the gravity of the situation. Linux is used on MARS. Pretend to care.
There is a pattern to the people who get upset when they've earned a rebuke from Linus. Those people could get over themselves.
Potentially hot take: I wish that more free and open source project leaders had the same "no-bullshit" attitude as Torvalds. It's a great way to cull out entitled people who put their own feelings over actual contribution, thus having negative impact over the project.
And every single other alternative to this behaviour would lead to worse outcomes, either to the project or the patch submitter.
He's keeping his promises. He didn't swear now did he? Hahaha only someone like Linus Trovalds would have his business life upended and be forced into an agreement that he would stop swearing at people