I have limited experience using them; I don't see any personal purpose in using an atomic system-- I'm familiar with Linux, I enjoy tinkering --that being said, for users that don't understand how Linux works, it's a great option.
I have a few tech-illiterate friends, who were hit by Windows 10 end-of-support, and wanted to test out Linux, but got scared away from the terminal; they do fine with flaks and Fedora Silverblue.