The whole point of "curl|bash" is to skip dependency on package managers and install on a barebone machine. Installing a tool that allow to install tools without installation tool is...
Like, yeah I get it - it's frustrating when xyz software you want isn't in the repos, but (assuming it's open source) you're also welcome to package it up for your distro yourself. We already learned lessons from Windows where installers and "uninstallers" don't respect you or your filesystem. Package managers solved this problem many, many years ago.