I am saying this because people do take offense on the 3rd world monicker. In many fields that term is considered offensive when used in public discourse. This is not a joke. What a group perceives as normal speech may be a term that in other circles is considered bad and better terms and classifications might be in place

I think only citizens of third-world countries are offended by the third-world monicker.

It is englightening to note that a false insult is usually shrugged off, and a true insult usually taken to heart.

The trick is to notice when the insult is true and modify your behaviour so that the insult is no longer applicable.

You can't just declare a common word to be offensive and get offended when people use it in a normal context and expect to have a reasonable conversation.

You don't know many 21st century identity-politics leftists, I guess. Try visiting Seattle :)