The only data collection in Ubuntu is non-personal technical data used for crash reporting and directing development, and even that is optional and transparent. The user is asked whether they would like to opt-in or opt-out during the first install (and shown a sample report of the type of technical data that is shared), it is also easy to change from settings afterwards.
In my opinion this is not a flaw, but a great example of how telemetry can be implemented responsibly/ethically. The user (1) is made aware of it (2) is given a real choice (3) is given the information needed to make a more informed choice.