The rules of syntax of natural languages are filled with exceptions and inconsistencies due to their organic manner of growth. Thus, anyone who champions the grammar of a natural language such as English must necessarily be a Champion of Inconsistency.
For example, H is not a vowel. But no one ever says a hour, its an hour. But you say a hotel. Cause an hotel sounds weird. 
This is why I prefer to have language serve me and not be its servant. The ultimate purpose of language is to allow communication between two objects capable of processing and acting on it, so long as it does this then it suffices. Natural Language carries thoughts from the human mind to the external, so it will always be imperfect. It may only suffice. Hence it seems silly to get annoyed when ppl - kids looking to display identity/membership - arbitrarily drp vwls and cnsnants from wrds. These people may use language as they see fit, it is merely an imperfect human tool.
If they are incomprehensible to me I say simply, I am sorry but I do not speak that language. I can only assume that their urgency to communicate outside their native group is minimal.