I didn't shift my statements -- both of the statements were part of the same overarching idea, which I didn't bother to expand in full detail because it was just a passing remark on my part, but seeing as you've persisted...
I consider the lack of knowledge and settlement about what 09III/IIIB's acoustic stealth level is, to hinder discussions about 09V's level of acoustic stealth because guesses of 09V's level of acoustic stealth are usually projected based off what a person believes 09III/IIIB's level of acoustic stealth may be, which may lead to disagreement about where 09V's level of acoustic stealth may be, without seeing the underlying issue which is really disagreement about what the level of technology/advancement/acoustic stealth of the existing generation (09III/09IIIB) is at. Optimally it would be best if we had information about what 09III/IIIB's level of acoustic stealth may be, such a thing is of course unrealistic, so one way to clarify positions is to also state where they believe 09III/09IIIB's level of acoustic stealth may be.
My position, such as it is, is consistent, but I hope you can appreciate why I didn't bother writing all that in what was meant to be a short passing remark.
As for guessing -- again, I haven't said people shouldn't guess, just that it would be a good idea to include additional information behind their positions, like where they believe 09III/IIIB are at, that sort of thing, to make things less weird, which in this case for the sake of discussion I mean to allow the identification of where the underlying disagreements are.