My experience reinforces this statement.
I just installed the KDE flavor EndeavourOS following the instructions at:
Installing KDE how it’s possible?
My goodness, how in the world do you remove XFCE?
Coming from Manjaro I had /, /home, and swap partitions already. I reformated the / partition and left both /home and swap alone. After installing EOS I spent a day customizing it and installing software that I use. The end result? It’s now my daily desktop system. My laptop is still running Manjaro XFCE and I plan on leaving it as is for a while.