You're missing the point of free software. You own it and can change it how you like. It's not problematic this is how it was made to be.
Here's two examples of how distros patching software has been helpful for me.
1) SquirrelMail (abandoned) patched to work with PHP 7.3 thanks to FreeBSD contribs
2) Abiword patch builds in the AUR that fix a broken default install.