I think it’s more the case of immaturity. It is more mature to let harmless errors pass that people make, whether it be speling, gramer, or whatever. It’s also disrespectful. If you are not smart enough to overlook or interpret you need to check into a lib forum. My kids were always correcting folks, and finally I declared war on that at my house and told them to grow up, and let he without any imperfections cast the first stone. I think they teach them this at school, so they can be certain everyone in the room knows they are smarter than others. Buncha lib elitists.
In an informal forum like this there is a balance. The worst thing is language that is imprecise or ambiguous, that forces the reader to try to grasp what you're saying.