Is that still true? The article/github thread cited on Prism Break are from 2012 and 2013 respectively. It seems only to be true of Ubuntu 12.10. The only thing I can from from current Ubuntu versions is the ad in the command line when doing an apt upgrade, and that is from 2022. It does not appear to exist in other Ubuntu based distros since it is an ad for Ubuntu Pro. Not saying it is great, but it seems like non-Canonical distros should be OK.