I have two thoughts on this:
First off you shouldn’t be using windows if you care about privacy and freedom. Its just not good for that.
Second off I wish gpg wasn’t dependent on a single key. If your key is compromised your screwed. You are better off using a messager with better security if you can like session, simplex chat, Jami and a few others.
Not everyone can do everything at once, and doing something is better than doing nothing at all.