“Straight” and “worshipping muscles” do not belong in the same sentence. It is an oxymoron. Lots of kids (and adults) like well built superheroes… but worship? Um, no.
Olympic gymnasts, or Cirque du Soleil performers, offer an edifying contrast: it is fascinating to see what they are able to do with their bodies through what are obviously years of disciplined training; this is normal hetero admiration/entertainment. But when muscles are artificially built simply for sake of showing them off (remember it’s not even functional muscle), and the whole point is to show them off to other men who want to “worship” (your word not mine) then, you are crossing over into the gay zone.
Flipping on the TV to catch a broadcast is one thing, but when you are driving miles out of your way, boarding a plane, or spending big money to attend a bodybuilding show in order to admire/worship you have crossed over into the zone of gay behavior. Mind you, it is perfectly possible to be straight and engage in gay behavior but the behavior is still gay.
If you are a man and you are worshipping male muscles then you are engaging in gay behavior.