no, it may not effect the game or the stats, but it does give people the ablity to make some one else say stuff that wasn't really said.
Just think, I could join a server with you and make you start cursing the host. The host thinks that it is you personaly doing it so he bans you
Speaking of which, I wounder how this would effect Anaconda server manager's langauge warnings... have to test it.
Any ways, I didn't like it because the guy used it to try to change the mode we were in (knives only at the time, he wanted guns).
IcI
Update: I just tested anaconda's server manager. You will still get the language warning even when you try to make it look like some one else talked.