Vanilla gnome isn’t for me so I used to install some extensions when I used it.
After a few hopping, I stopped using Gnome, because I find that painful to :
install the extension app (the one that allow you to download and manage the extensions, and that is usually not the one installed, it might have changed, as I stopped using Gnome for a year or even more)
install the extensions I want
configure the extensions
On KDE, I just have to set it as I need it.
If you do not change distributions everyday, then it’s not a big issue I guess.
But it might be troublesome for beginners trying distributions that have vanilla-close gnome to know that extensions exist. My needs are not complicated, so I only used extensions that allow me to have a dock on both of my screens, and to have the minimize button.