I mean, the fact that the serial killer in question has been dead for forty years makes this conclusively "a funny story" and not "a red flag". But it also probably is mandatory to cover this ice breaker before the person you swiped on Googles you.
"Just FYI, funny story, Google thinks I'm a serial killer. But that guy's been dead for years, and Google is mixed up."
I've seen how bad people are at skimming things they read online though even when the facts are laying there in front of them, and I could easily see someone (hiring manager, dating app they matched with) just googling their name, seeing the same pic match, and instantly running for the hills.
And, especially if it were something less extreme than serial killer and dates/location seemed plausible at first glance (or not--as you say skimming), a lot of people doing some quick resume triage will see the fraud conviction and move on.
For most people, if they came across a CV of someone who might be a serial killer, they'd want to read the full article. It's not something that happens every day.
