I'm sorry you were confronted with that OP because from where I sit, with the information you provided in your post, it seems that those people who complained about your vape were being judgmental jerks & nothing more. I don't know what you look like of course but I wonder if their reaction to you had more to do with your appearance & their assumptions about what "kind" of vaper you are rather than about what they witnessed you doing. If some cute little grandma type woman blew the same cloud using the same set up I wonder if they'd have reacted the same way.
Don't take it personally. There's not much you can do about those type of people other than ignore them.
I always wonder about this, appearance, I've never had any problems or confrontations about my vaping. I don't stealth vape ever, I normally only vape where I'd smoke in public, I have however seen others get looked at funny or asked to stop for no good reason. However, I'm 6 foot 3, solid 240 and legally armed.
Actually the other day had some one walk through my cloud in the parking lot at my complex, they turned and attempted to look at me crazy- I looked right back, and before I could say anything my 9 year old daughter said "why they mad ? All this street, they could have walked on the other side- besides it just water vapor" yeah, they kept it movin'. Funny thing is I seen them later while taking out trash and they were smokers.
I mostly sub-ohm, only way I get flavor I like, not really worried about my clouds or what anyone else thinks of them. I'm not vaping in the theatre, store or mall etc. I'm not sneaking or stealth or intentionally blowing it your way. I'm respectful but I'm also a grown ... man, so if it isn't hurting you or anyone else mind ya bidness.
All Day Vapin'