This is an uphill battle in the face of corporate lobbying, learned fixedness, and, let’s face it, unintuitive UX that is found in some selection of FLOSS which is often absent in proprietary counterparts: something that people who are not tech savvy (tech-indifferent?) would prefer not to put up with.
However, I think the last problem can be mitigated with the right kind of focus and funding from such initiatives.
There have been many such initiatives[0][1] over the years in different countries where they eventually lose steam and fade away.
Also, is there an operating system backed or sponsored by EU that is actively maintained, analogous to BOSS[2] and Pardus[3]?
[0] https://en.m.wikipedia.org/wiki/Category:State-sponsored_Linux_distributions
[1] https://en.wikipedia.org/wiki/List_of_Linux_adopters
[2] https://en.wikipedia.org/wiki/Bharat_Operating_System_Solutions
[3] https://en.wikipedia.org/wiki/Pardus_(operating_system)
E: typo
Most of the criticism I have seen online stems from how Canonical (the company behind Ubuntu) plays fast and loose with the FLOSS ethos. The earliest controversy I can recall was the inclusion of the ‘Amazon shopping lens’ in its Unity desktop environment. There may have been earlier issues, but this one made mainstream headlines in the early 2010s. More recently, the push for Snap (its application bundle format), which relies on proprietary server-side components, which invited criticism.
That said, I still find the OS ideal for most users. It has been (and still is) a gateway OS for many Windows and macOS refugees, thanks to its strong community. It was for me nearly two decades ago, and I prefer to remember Ubuntu for the good it has done for the community.