That's a historical misrepresentation. There were no treads against the "traditional" Linux desktops from Microsoft. There were, however, a lot of mediocre designers who wanted to "be like Apple".
https://www.mercurynews.com/2007/05/15/microsoft-says-linux-...
https://www.computerworld.com/article/2566211/study--linux-m...
https://money.cnn.com/magazines/fortune/fortune_archive/2007...
https://www.theregister.com/2004/11/18/ballmer_linux_lawsuit...
https://www.linuxinsider.com/story/patent-suit-against-red-h...
https://www.computerweekly.com/news/2240057754/Open-source-i...
Who are you going to believe? People trying to stoke fear or an important GNOME project member?