The downside being that people can fake liking art and literature, whereas you are actually wearing the jeans and have the biceps. You might affect a taste for highbrow literature without actually reading it (though you may come rapidly unstuck if questioned on it).
Oh, you can essentially fake the biceps and the mechanisms aren’t good for anyone. Better a reader than a roider.
Whether you cheated to get them is another thing - but nevertheless you still have them, and this is about immediate attraction, so pretty much amounts to the same. But fakers get found out eventually.
I personally tend to advertise my literary and/or artistic preferences via the medium of *incredibly* niche t-shirts (which will as a side effect generally display my complete lack of biceps). 😆