Avram in MD: Great points applicable to anyone. Sincere Baalei Teshuva are usually stronger in their yiddishkeit and don’t take everything for granted.
Personally, out of the people I know that went off the derech, almost all were FFB’s. I think in many of those cases, everything was by rote and they didn’t appreciate what Torah Judaism really is.
I’m an FFB who grew up in Boro Park and it took a while to gain the appreciation that a Baal Teshuva often has.
If someone is solid in their yiddishkeit, the fact that they may be a Baal Teshuva shouldn’t be a factor. The case sited above makes it even more so, in that you wouldn’t have family conflict over religion that some Baaslei Teshuva, whose family weren’t supportive have.