Well, it's probably true. Although easier to confirm sometimes, information across the internet still is often a big game of telephone. Some people treat internet info like UDP and just accept what they get, some people are TCP and will fact check before accepting it.
This person probably did just hear it from a buddy.
To complete your answer: where "UDP flooding" is caused by Propaganda machine using AI & Botnets which can only be created/handled by BIG/state actors which have access to this kind of resources...
This BS is the same as facebook memes that say "Bill Gates and George Soros are collecting your posts to farm lizard-people babies and start the New World Order! Everyone write 'I DO NOT CONSENT TO HAVE MY POST TURNED INTO LIZARD FEED' after every comment you make!"
It doesn't really work because no company worth a dollar is going to rely strictly on AI screening. Speaking as a manager, I simply don't put people on my team that I haven't vetted carefully, nobody I know in the professional world would differ.
The point is to punch through the initial screening process. The vast majority of applications are never even seen by a human, because they’re automatically discarded by automated screening processes. Even if you’re perfectly qualified for the role, you didn’t have all of the specific keywords they were looking for, so the automated system rejected you.
I'm skeptical that this is at all true, but it's not about being granted the job, but rather getting past the initial HR filtering and actually getting the chance to talk to a human.