Even their earliest "uncarrier" features weren't without issue. Making certain services (spotify, apple music, youtube, netflix, etc.) not count against subscribers' data caps, while continuing to enforce data caps for other uses, goes against the spirit of net neutrality. This also includes throttling video streams by default to force lower quality (with opt-out on their site).
Promos like a free pizza on Tuesdays seems like a neat optional perk on the surface but their existence fundamentally mean subscription expenses on cellular network service are partially going towards things that have not even the slightest tangential connection to the service.
It is open source, but had some controversy. Most prominently the addition of telemetry a few years ago, which was never included in the builds managed by Debian or most other distro maintainers. They also added a Contributor License Agreement which lets the Audacity project change its own license (even to a non-foss one, though they promise they won't) without needing to have the change approved by any individual developers.