On the one hand, I'm glad that Superman is one of the heroes that has an actual costume still. Everytime I like at Blue Marvel's vest and cargo pants look, I cringe. I hope they never change Superman's costume wearing glory.
But the trunks? I don't know if they're being banned or not, but grown men in 2021 really should not be running around with their underwear on the outside of their stockings. It's time to let that one aspect of his costume go. Have Lois frame them and hang them in her office, if you like, but get rid of them.