I know what you mean, Chestnut; but it is very important to some people that they are addressed as gender-neutral, and, as yet, the alternatives to 'they', such as 'ze' or 'xe' are relatively unknown, so would involve an explanation every time they were used. It's not one that really bothers me, as I think it is just good manners to address people as they choose, and it requires zero effort, really. (does 'zero effort offend anyone? 
I agree that 'meet with' is an atrocity, though. I have a friend who uses it all the time, and I have to try hard not to wince. It's interesting how little things like this can be so (mildly) irritating, isn't it?
Others that irritate are 'hysterical' for 'hilarious' - 'She found the joke hysterical', and 'Three items or less' at a supermarket. Countable nouns take 'fewer', not 'less'. Shame on you, Marks and Spencer 