i think people would be more willing to listen to the “including x identity in the lgbt acronym isnt useful as it fits under y other identity already there” argument if it wasnt worded as “your identity is Wrong and you’re actually y and not x” but something more to the extent of “society doesnt makes a distinction between x and y and since y is recognized by that same label, theres no systematic oppression for being x, what oppression you do face is tied to you being y/being percieved as y and thus including x when y is already there doesnt bring anything new and could actually drive people off”.
i wont add my actual thoughts on that argument and i know i may be strawmaning with that first wording but its ultimately how its percieved and so the answer youll get will be an answer to the “youre invalid” argument and not what you actually said. wording is pretty important when youre exchanging conflicting opinions & political stances (lgbt+ issues are political). Sadly pretty much anyone can see your exchanges on social media and so some wording that are understood as having more meaning & thought behind them by both people will be read by someone who lacks that context behind it and misinterpret it. im not suggesting that we all stop joking but to keep in mind how what youre posting publicly could be misinterpreted and how what youre reading couldve been badly worded, especially on social media