Grammar: pick your fights, please
If you are good at grammar, and you notice some bad grammar, there are two different things you can do about it:
1. Say something.
2. Don't say anything.
If you fall into the first camp, you are either 17 and think you are cool because you know what an infinitive is while the guy in your teacher-imposed study group does not, or you are just someone who doesn't know how to pick your fights. I'm sorry! Those are the only possibilities.
Why don't you just not say anything? Don't you know that the rule about splitting infinitives is antiquated. And sometimes bad grammar is better than good grammar at letting readers know how you really feel. Did you ever think about that?
You should think about doing a run-on sentence once, or adding exclamation marks where once there were none. It will probably free your mind.