Well the thing is, if the loading screen is really cool then why not, but it's about being mature about implementing it. There're always two ways to do it:
 
	 
 
	A) Admins force it into a patch with no other option. People who happen to not enjoy the server have to either live with it on other servers they play or manually remove it (which is not easy if you're a common user)
 
	 
 
	B) Admins let it out of the patch as an extra file, so that people who enjoy the server can have this extra.
 
	 
 
	Or even better, alongside with the installer, also provide an uninstaller which removes all the extra files. It shouldn't even be that hard to make.
 
	 
 
	The problem is that most admins just don't even bother thinking that far. They think to themselves - "you'll play my server and you'll enjoy it, if not then f*** you". I'm sure that for many people, this behaviour is a first red flag. Ironically enough, in most cases, the less you force players to stay on the server, the more likely they actually do.