This has two positive parts.
First, you got to say your thing. Whew!
Second, if the person who you were trying not to reply to is serious, they're going to search on the topic. And there's your post, right at the top of the results page.
They feel smart because they proactively found the answer. They might even thank you! Well, probably not, but at least they didn't block you.
Anyway: post, don't reply. Don't forget!