They can’t slow down the charging rate unless they want to get in trouble with the EU. If they’re planning to limit the data transfer rate for, say, non-Pro iPhones, that would suck, but then again all iPhones to date have been USB 2.0 at best, and USB Type-C is just the connector and doesn’t say anything about data transfer rates anyway.
I still remember several months into the pandemic how my then-company’s VP brought up how we can go back into the office, but we wouldn’t be able to meet in the same room or be in close proximity to each other, and so any/all communications would still need to be done via MS Teams.
I think even he realized how ridiculous that sounded because there was a momentary pause before he finished his sentence.