Yeah that's how I write these things. I refine my writing a few times before I am satisfied.

Editing already posted content is what the edit button is for. I write, post, read it over, see that something didn't come out exactly as I wanted, rewrite that and so on.

This is a forum post, not a formal essay that I should get exactly right before I post, then to remain untouched forever. The edit facility is provided so people can edit their posted content and that is exactly how I use it.

As to your replies becoming irrelevant I have no hand in that. I don't read replies and then re-edit (though I can see how it may feel that way to you,especially if you dashed off a reply before I finish rewriting some sentence or the other). Frankly when I (re)write something the (ir)relevance of any unseen replies posted is the least of my concerns.

"Kindly try to avoid this."

Change the way I write to accommodate your preferences? Thank You for the suggestion but I decline ;-)

If it bothers you that much wait a quarter hour or so before you pen your reply. Or save the first version you see and quote it. If you can wait an hour, the post becomes locked and uneditable. Don't be so quick to reply if you want a guarantee of immutability and "relevance". Or just learn to live with the ephemerality of your replies. Or just don't reply to me. Whatever. (Feel free to downvote this if it wasn't the answer you were looking for ;-))

(fwiw I rewrote bits and pieces of this reply eight times in about four minutes,without ever checking for any replies)