Weird tangent for sure. Especially when it's so little difference between the roles for most modern fullbacks. You get more coverage from CB and more space to run into (usually no winger in front of you), but essentially the skillset and task is the same for most fullbacks who have some basic attacking game.
Only exceptions are the defensive fullbacks who are more like 2nd/1st CBs (Thuram, Chiellini, Aspicueleta, Pavard, Kounde, Lucas Hernandez etc). Those won't be asked to do a wingback role. But most other fullbacks would be for sure.
It's just common sense to see. Like watch Chelsea, they allways play with wingback (or until pocchettino), Chilwell and Reece James are typical fullbacks who easily play wingbacks. The job itself is the same for them.
What's rare and absolete in todays game is strictly wide midfielders who can only play wingback in 352 or defensive balanced wide mids in 442 (they died out the same way Gary Neville type fullbacks died out, types who never attack, but arent defensive enough to play CB). Those types don't really exist anymore much, so fullbacks are given the wingback roles.