As a maintainer, I understand that this must have been frustrating for you. On the other hand: the maintainer will have to maintain the changes you've contribu

As a maintainer, I understand that this must have been frustrating for you. On the other hand: the maintainer will have to maintain the changes you've contributed ~forever. Effectively, the contribution you're making, something that you can just throw at the maintainers, will have impact on their maintenance of the project for a long, long time. As such, I disagree that maintainers are "bad" for doing this; there's just a large disbalance between the time your one-off contribution takes and the time they might have to spend refining it and/or fixing bugs in it. Given that they might also be juggling a day job and working with a bunch of other contributors, getting there can take a lot of time. (Of course, they should still strive to be respectful about it, and as transparent as possible -- unfortunately, it's often hard to say in advance how much time it might take.)