Gpt4free uses API vulnerabilities that ultimately proxy to OpenAI's API with someone else's OpenAI credentials so that you don't have to pay for it. That's the whole gimmick.
These API endpoints aren't public service open relays which seems to be what you're trying to claim in your analogy:
The whole point of the project is that they are. It's a compilation of public, free APIs that have been found. Those issues you linked are from people who don't understand that it's expensive to run a free relay for a paid service.
When you're so loose with words, it's impossible to even have a discussion.