But in open-source- process is unpaid for sparse- and the gate-keepers usually have excellent reasons to merge changes not back. If they don't - they are forked.

The reason being that while the software generated "solves" your problem, it generates problems for everyone else using the project.

Like demanding a elevator cabin be tailored to your preferences, ignoring all the other buildings using elevator cabins, to which it no longer is compatible for example.