> If someone says "when it comes to building codes, the UK is no longer in Europe", then everyone knows exactly what is meant. Performative misunderstanding isn't helpful.
People can work around a lot of mistakes, it doesn't mean it's correct. If I tell you my brother speaks Mexican, you know very well I mean Spanish. Does that mean I shouldn't be corrected?
It depends. if the phrase "he/she speaks Mexican" to refer to the Mexican dialect of Spanish is in common use, then the descriptivist position is that no, there is nothing to correct.
People can work around a lot of mistakes, it doesn't mean it's correct. If I tell you my brother speaks Mexican, you know very well I mean Spanish. Does that mean I shouldn't be corrected?