Yes the fact that Microsoft shares this information is concerning. But Microsoft only provides the information to Canonical (according to the ToS) for technical assistance and product support, but not for Marketing purposes.

Canonical is the one who violates trust here. Because they are using this information for marketing purposes, which they are not allowed to do under the information sharing agreement that they have with Microsoft.

So yes, we could argue whether Microsoft should be providing the installation information in the first place. It should at the very least be opt-out (on by default with the ability to not share), and preferably it should actually be opt-in (off by default, check a box to allow). So there is a violation of trust going on here, but this isn't any different than every other major tech company is guilty of right now (not that it makes it right).

But Canonical is the one that took the information and used it in a way that was never agreed to by either the person sharing the information (Microsoft) or by the user via the ToS (the ToS says that it is strictly for tech support, not for marketing). Canonical is the one that really overreached here.