> I think it would be better if there was more understanding of what people were talking about when they said "racism"
You do realize that one of the main reasons for redefining words is to cause confusion?
As in, we'll take this word with narrow meaning and then massively expand the meaning in order to fight our cause?
As in, nobody wants to be accused of being racist so if we reuse the word "racist" for something else we'll be able to manipulate the discourse?
If they actually used the words as they mean, people would realize that they're complaining about nothing.