I am testing both, so for me a mix of both is best.
While it is nice to install a distro with a given desktop environment OOTB, you can always change it, and even have multiple ones installed at the same time.
This is true for Debian, but not for many others. Even Fedora ships with preloaded DE “spins” now. And changing it post-install requires more than beginner level knowledge, specific to that OS. For someone coming over to Linux directly from Windows/Mac, that’s not really feasible upfront.