A few things to unpick there
Politicians aren't getting involved with technology, they are just mandating that standards are in place. It is up to the standards bodies/consortiums that will define the standard.
As for not getting better solutions that USB-C, I couldn't imagine needing a connector smaller than usb-c.
But in any case, you won't be stuck with USB-C just as we haven't been stuck with the variations of USB or HDMI or any other standard. There are mobile standards that from 2G and what ever went before it to 3g, 4g 5g, standards evolve over time. What we don't want is 50 different mobile connectors and charging bricks which in no way impedes a company. Take PD, which uses handshaking over different voltages and currents that vary with what each device needs.
If you take a look at the prices for different cables, we see that Apple Certified cables cost a lot more than USB ones even though Lightning has been out for a long time.