That's reasonable. But I personally consider it to be arguing in bad faith if someone makes a comment, I reply to it, then I go back later and see that it's been edited to look like I'm replying to something substantially different. Minor edits for spelling or punctuation are reasonable, but introducing entirely new strands of argument, or deleting arguments that were there originally, gives an incorrect impression of what's actually been said. I'm not going to keep going back and checking every five minutes that the context of my comments hasn't been utterly changed, so I'm only going to reply in more-or-less stable contexts.