Entitlement in open source is a massive problem, I have experienced it first-hand many times. The problem is that it discourages contributions not only from the existing maintainers but also from people who may volunteer to fix issues in the future. Would you be willing to contribute if most of the issues are just asking for things (often rudely) and not even saying thanks when an issue is resolved?
Unfortunately I have seen far worse examples than the one linked in the article[1]. I would encourage people to not only think twice before acting this way but to also call out people that are acting entitled in open source to discourage such actions.
1 - https://github.com/dom96/httpbeast/pull/35#issuecomment-7218...