If I stubbornly refuse to use the common terms and instead only use the technical terms …

That’s where your role takes part as someone who knows the correct term. I myself often teach my close ones about tech and its terms in my field. I don’t want to normalize using wrong terms in a technical discussion. It’s just depending on us to teach what’s right or just being comfortable what is already wrong and doing nothing about it. Activists are educators as much as they are advocates.