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Looks like the OP got it from the <title /> text instead of the actual headline of the article (which you quoted). Confused me for a minute, I thought "mark" was slang for a hitman's target.

Yeah, I swear I spent a few minutes trying to parse that and still couldn't figure it out. Didn't realize there was a proper noun in there.

Probably a bot auto posting.

Yes, I thought maybe this would be about a speedrunner for the Hitman games.

US style headline capitalization is really annoying, most of the world dropped that decades ago.