I don't see what the usual "grammar pedant" complaints have to do with valuing communication. I typically see people complain about things like using "there" instead of "their", "its" instead of "it's", "affect" instead of "effect". As a rule, none of these things have any impact on the ability of a reader to understand the writer's intended message. I realize that in some rare cases these mistakes create ambiguity, but that's never the grammar pedant's complaint.