Every other OS I've used recently (MacOS, Ubuntu, Centos, RHEL, ChromeOS) doesn't require special knowledge or extra work to remove pre-installed spyware/bloatware. They may well have crap installed, but at least they're subtle about it.
If you are using Ubuntu, then you atleast have some knowledge about the OS and would be savvy enough to Google and run some commands on the terminal to fix it.
Compared to Windows, which has a huge user base with absolutely no understanding of how the OS works and what to do if you don't like it OOTB.
The current version of Ubuntu just has an affiliate link to Amazon. It may be overly difficult to remove and upsetting to some users, but it's nowhere near as egregious as the software many Windows machine are shipped with.