Sure not all girls provide BBBJ, no different to most other shops.
I only know of 2 girls currently at T5 that don't provide FS.
As much as I like a good BBBJ like the next guy I've found some girls provide a great CBJ and are willing to be coached to give a better experience within their limits.
Part of the fun watching a new girl develop her skills and practice with you 😁
I've also come across some girls both at T5 and other shops that start with CBJ and progress over time once you become a regular and they feel more comfortable with you.
Of course the more experienced girls jump straight in. I've got a good mix of both experienced and newbies I'm seeing ATM so best of both worlds