And it's trivial to connect a Ledger device to Electrum or Sparrow via your own node and avoid Ledger Live entirely. But the default position for using both Ledger and Trezor devices is to depend on their respective servers, and therefore they can see all your addresses, balances, and transactions.
Not true, because you still need ledger live to update and start using their device.
Ledger will still track everything else you do like section of the screen movement, same as IP address, only addresses wont be sent back to ledger if you use your own node.
You still didnt provide a single proof for your claims, and I am waiting to see something substantial, not pure speculation.
This sounds very similar to what the linked user above is claiming about Ledger. And don't forget Trezor supported AOPP and are still supporting blockchain analysis via Wasabi, so they don't exactly have an amazing reputation when it comes to privacy.
I don't care about Wasabi at all, but you can use your own coordinator, there is no such option available anywhere for ledger.
Ledger are obviously a joke now, but that doesn't mean Trezor are automatically much better. If you want actual privacy from your hardware wallet, then you need a permanently airgapped device and your own node. Anything else can be surveilled.
Trezor is better in so many way, but let's just start from being open source.
And airgapped device and your own node doesn't mean you are safe, especially for 99% of the normies.