I’m certain that video probably got a lot of likes from folks who didn’t get the irony which is probably why the algorithm associated you watching it with that crowd. (Also I’m really sus about the whole “joking about being a hateful prick” industry, but I’ll assume your assessment is spot on here.)
If it’s effective, it will only be for the wealthy. If it’s a mixed bag, the wealthy will decide who gets it. If it’s a placebo or nearly so, it’ll be everywhere and cheap.
See also anti-agathics and other life extensions.