I personally prefer bbj to cbj. Cbj isn't a dealbreaker for me but it does end up lower on the list.
When was the last time you had a girlfriend give you a covered blowjob? What about a hookup from a bar, club, strip club, or dating app? Probably never, unless you asked them to which I'm positive you wouldn't cause most women would typically prefer not to suck on latex for however long and most men won't turn down a bare blowjob.
In all realism, probably more likely to catch an STD from a girl you start dating or a hook up or fwb because most "normies" don't get tested frequently. Most of the general population have unprotected sex far more often than they don't because most don't even consider STDs when making that decision.
What the primary concern for most is pregnancy, not STDs. It's basically "Yeah, we can go raw because I'm on [enter contraceptive here]". How many other people have they gone raw with? Have they been tested within the last month - three months based on their sexual activity? You don't know. Hell, they can lie the same way unsafe providers can. Most normies don't even know that you can get chlamydia or the clap in your throat just put of pure lack of knowledge. So much of the general population is not knowledgable about sexual health and even talking about getting tested is perceived as taboo.
Personally, on a slight side tangent, I've been part of the open/poly/ENM community for a little over a year now and every single person I've met in that community is so knowledgable and safe when it comes to their sexual health. Talking about STDs and getting tested is normal and even expected. But for in monogamous relationships it's this massive elephant in the room. It means you've been promiscuous prior to meeting your current partner. Or it could mean you cheated on your current partner. Even when it comes to STDs chlamydia and the clap are the LEAST is your worries and can be fixed with what amounts to the snap of a finger. They're so common and so easy to treat. Nowhere near as scary as others.
At least with (reputable) providers who provide bbj you have a guarantee that they get routine testing every two weeks, minimum. And if they don't deepthroat, as others have mentioned, the chances of catching something are even less.
So get off your high horse about this nonsense because whatever you believe about getting a bbj from a (responsible and reputable) SP being more risky than any other normal woman in society is a complete and total fallacy. I'll take a bbj from a (reputable) SP any day of the week over some chick from a dating app, bar, or a mutual friend.