Some of these key findings seem a bit overblown. The number of domains persistently connected to shouldn't really matter - one is enough. Update checks are standard for software. Unique IDs/device fingerprinting are so common that browsers build in ways to try to prevent it at scale. JWTs are standard authentication tools - who's the security concern for? ByteDance? Or are you saying the JWTs are from the local machine? And MessagePack isn't exactly a secret format either.
The TL;DR of this seems to be that ByteDance's AI IDE collects a crazy amount of data and offers free AI services in exchange. I'm not really sure why you'd want those services, especially at the cost of all your code potentially being stolen or other data being collected, but it should be obvious that nothing in this world is truly free.