I really hate gotcha videos like that, but I'm sure it was effective. So will they now move into the skimpy, ill-proportioned bathing suit era? Sexuality will always express itself somehow.
The intent was clear. The only reason someone makes a video like that is to push puritanical filtering. I expect searching for beach might include shirtless men, and that's okay. Whether you see them as sexual or not depends more on you than the artist.
We are talking about the regular of regular "Art" category. Maybe, just maybe it shouldn't have NSFW stuff immediatly visible to anyone signing up (especially when they entered they are 13).
I really don't care either way, it's not exactly my problem and I don't really mind it, but there are parents that don't want their kids exposed to that (ignoring if parents need to be helicopter parents when the kids are on the internet) as well as other people that aren't comfortable with nudity in any way.
I would rather 13-year-olds see naked people than chainsaw mass murder, yet what is socially acceptable in North America is the reverse; the normal thing is unacceptable and the horrendous thing is just fine.