Not at all.
I'm just a bedwetter, not a day wetter. I only wear a diaper at night. I don't like to diaper in front of her, although it doesn't bother her.
My wife has always preferred sex in the morning after showering or in the afternoon, so the diaper isn't an issue.
Once in a while, she'll pull down my diaper and we'll have sex. Usually, it's when we get into bed. But sometimes, she will wake me up in the middle of the night. A wet diaper doesn't bother her.
After sex, I usually fall asleep with the diaper off or down. That would be a problem if I wet, but I've never wet (other than little spots) after having had sex. The only real problem is that we both generate a lot of fluids. If I just pull the diaper back up, all that stickiness under a diaper is annoying.