Big tech likes this because there are a lot more face recognition technologies in the wild in real life and being able to connect all real life data to online data is quite valuable. It's also quite possibly the largest training set ever for face recognition if ids are stored and given how ids and images are sold across many companies it seems very high probability that some company will retain the data rather than delete after use.
So don't use big tech. No one needs discord, or porn, or social media. But this is not the answer. The answer is fighting to change the laws. And we can start changing the laws by boycotting big tech. Laws are changed by money flows, not ideology.
China (and US via latin american countries and it's own poor people ...via benefit programs access via id.gov) is testing both biometrics and device id to evaluate pros and cons, and to merge data, when it come to autocratic control.
In china there are places to scan you device and get coupons. usually at elevators in residential buildings so they can track also if you're arriving or leaving easily.
In the US every store tracks and report to ad networks your Bluetooth ids. and we know what happens to ad networks.
US now requires cars to report data, which was optional before (e.g. onstar) and china joined on this since the ev boom.
the public id space is booming.