All network requests share at least the IP address, which is PII, and should only happen after obtaining informed consent unless they are required for the requested user action. Since telemetry would be pointless if its the same for everyone there will inevitably be more information that can ultimately be used to identify users. You can argue as much as you want that you are doing it "better" than others (there is always someone worse and the software industry's disregard for user rights is well known) or that it is useful (many unethical actions can be useful but the ends do not justify the means, especially when alternatives like bug reports often go ignored) but that does not change the fact that you are sharing PII without informed consent.