This is, of course, a "not all" statement. However, generally speaking, the lower the players rating the higher the chance they are going to be rude. At low ratings, players do not take chess as seriously and have worse etiquette. Again, not all. There could be an 800 player with a heart of gold and some 2300 that acts like an asshole. I have met both of these exceptions. When your rating rises more the players will tend to be more friendly in general.
If you think people are being rude too often you can simply block chat by turning kid mode on.
If you think people are being rude too often you can simply block chat by turning kid mode on.