It’s not my job to fix their bugs. It’s not my job to handhold them through it. You are better off anonymously posting the full bug online and let god sort it out.
ahhh, the old "I expect everyone to read my mind about extremely nuanced and specific things, and those who can't are idiots" mentality at play
It’s literally not their job, either.
It's not their job to fix your bug.
You're also free to not use their free software.
You're paying exactly $0 for support for this software. So any support (eg: bug fixes) you get are a gift. That means that if you (1) use their software, (2) don't provide a good bug reports to help them fix their bugs, and (3) complain about how it's not your job to fix them then... you, my dear person, are acting like an entitled ass.
It's not hand-holding to provide a good bug report, it's essential to make the bug report actionable. curl is so widely-used that bugs often come from a combination of the software and the environment (OS, libraries, etc). Without enough details to reproduce a bug, then the bug is often impossible to track down. This means: recreate the environment, the actions that led to the bug, and create the bug itself.