As long as it's still running it's okay to be a little slow as long as it's still a great deal of certainty, and when a project is still viable as it is, it's not worth calling it a scam, even if the person doesn't like it personally.
It's good that you understand that. As there are too many people that don't even learn any information about the project or coin and call it a scam just because they decided like that, or because it's not open source. It always wonders me. Everyone believe they're the best experts.