If this would be the case, Ti simply wouldn’t be sold by companies for the purpose of vaping and there would be severe health warnings about it.
I’ve seen a lot of stuff written about it as well, but mostly stuff where people are just talking about it, no references, nothing to back up the claims. I’d feel pretty safe vaping on Ti, but it’s expensive wire and I don’t like to clean coils… when it’s time for a new wick, I always put in a new coil too. (Or maybe I should put it differently, when the coil is gunked up, I’ll change the wick too).
Would be interesting to know what mod and settings and coils you were vaping on. I find it hard to imagine that would happen on a properly configured DNA device… TC is offered on most devices but there are few where it actually properly works.