Even on aero bars---whether ridding a TT bike or touring or randonneuring or whatever--I wouldn't expect a lot of front-wheel spray to hit one's face .... but whatever.

You know, we can post here and not demean each other all the time .... some folks seem to invite it with their <censored> posts but not everyone, all the time.

I also expect each rider to be able to apply fenders or whatever as needed .... there are so many fender options and so many mounting options, I'd think one could make something work for just about any ride if one truly wanted to.