In my past experience, too many extensions tend to break every time GNOME Shell is upgraded and it can take a long time to get them fixed.
The GNOME developers have signaled over and over again that they're unwilling to provide stable APIs for UI customization. Being a developer myself, I can see why it's a burden, but the current situation is that it's being done anyway through unofficial extensions and users are left to deal with the random breakage.
The GNOME developers have signaled over and over again that they're unwilling to provide stable APIs for UI customization. Being a developer myself, I can see why it's a burden, but the current situation is that it's being done anyway through unofficial extensions and users are left to deal with the random breakage.