[Petrosius]

You are correct, in theory, that a bishop cannot ban a licit option. However, for the past 50 years any priest who would attempt to celebrate the new Mass in a traditional manner—Latin, ad orientem, kneeling for Communion, etc.—would find himself on the chopping block, without assignment and perhaps even suspended. I know from personal experience.

[Campion]

"Any priest for the past 50 years" is painting with a very broad brush. I go to a parish that does all three of those things. Our bishop (a +Francis appointee!) knows and approves of it.

(It helps that we are in the middle of downtown in a major city; nobody lives there, so if we are to have a congregation for Sunday Mass we need to be a little ... different.)