Not the OP, but will take a crack: A divergence from the acceptable usage of words makes comprehension difficult, and can cause miscommunications, especially where precision is required; which happens often in a business environment. Even in a misunderstanding of proper usage can severely change the intent behind the messaging, if most communication happens over text (Slack/Email etc.).

That being said... if I'm reading this correctly, its specific to communication in non-business settings, where I don't really care much about whats "proper".

This is a losing battle, btw. Every society seems to struggle with the problem of keeping purity in language and all of them seem to have failed in that effort. Europeans failed to keep Latin relevant. Indians failed to keep Sanskrit relevant. The common language that is well understood by a majority will always win. And trying to keep it pure by force, just makes it die in relevance.

Which is why, the fact that Oxford English Dictionary keeps adding new words to the English dictionary is one of the best indicators of the resilience of the English language.