We didn't pay for it, so I'm not going to drag anyone personally for something that's a cultural issue. If you're worried because you might use it, you'll see it in your benchmarks just like we did. If you don't have benchmarks, it's the least of your performance concerns.
why do you need to be so combative? I like to learn from others mistakes if I can. If you don't want anyone to learn anything from your issue, and force everyone to figure out everything for themself, thats your choice.
They've made it clear - they don't want to denigrate a library they're using, likely for free. Imagine the author of that library seeing such a comment. I'm sure you'd find it educational, but it's a terrible experience for the author.
We didn't pay for it, so I'm not going to drag anyone personally for something that's a cultural issue. If you're worried because you might use it, you'll see it in your benchmarks just like we did. If you don't have benchmarks, it's the least of your performance concerns.