Some people have actual breathing conditions (pollution sensitive, allergies etc) that require a proper sealed mask, without the valve the seal will often break.
Valves with a diffuser cap that stops the air jetting out are probably the best if you have this restriction.
If those people need a proper sealed mask now, they also needed a proper sealed mask before covid-19. In actuality they were not wearing a mask at all unless they were either Japanese or usually in a hospital/nursing home/hospice and on a short trip outside to see a specialist.
That being said, I have breathing problems and the combination of masks and cold weather is awful. I'd love to wear something that released the moisture. It wouldn't be nice to the people around me, though, and I can just get away from people to take a break if I need it.
Worse than anti-maskers? At least someone wearing a valved mask is reducing the risk that he/she will get COVID in the first place and, thus, become a spreader. Masks that don't filter exhalations can still contribute to reducing R0.
Anti-maskers mostly don't acknowledge COVID as a risk. Valve-wearers do acknowledge that COVID is a risk, but choose to disregard others' health anyway. One is dumb, but the other is malicious.
there's also people who wear valved masks and don't know about their ineffectiveness.
and then there's people who rage at others for wearing valved masks, even if the valves are properly capped. My wife's had to deal with a few dickheads like that.
Valves with a diffuser cap that stops the air jetting out are probably the best if you have this restriction.