It’s also bad manners.
Not necessarily.
I have embarrassed myself by leaning on a poster who had an amazing control of Brit and American English, without the necessary control of its nuances. Since this is an international forum those folks need some slack and should feel welcome.
There is another group that deserves patience. Those that are on medication that aids them in appearing "normal" for lack of a better word. Those are a lot harder to identify, but as soon as I do, they get special consideration to make sure they continue to feel welcome. Also those that sometimes seem incoherent on account of very advanced age; also junior Freepers.
I think Free Republic deserves as wide an exposure as possible.
But that's just me.