Only speaking as anecdata, but yeah, I had asthma, and I've just avoided all forms of smoking as much as possible. Vaping does present itself as a safe alternative, though, whether actually true or not. It's possible for someone to be misled and think they have nothing to worry about.

Also I used to inhale cigarette smoke second-hand in restaurants and bars when that was still legal. I don't think my asthma got any worse from it that I am aware of (although I am very thankful that's no longer a thing anymore... tried going to a casino in a state where it's still legal recently and coughed like crazy... I was only there to see Penn and Teller perform).