'Simple reading' but you imply in that 'simple reading' that High elves would also want to reunify with the Blood elves as if it also meant joining the Horde.
Being on a contrary position doesn't have to go hand in hand with lack of judgement and honesty.
High elves want to bring Quel'thalas to the Alliance. And, also to clarify, because I have seen lots and lots of misinformation and dishonesty regarding this: High elves helped the Blood elves to defend from the Amani, for a very simple, logical, and easy to understand reason, if Quel'thalas falls, there's no Quel'thalas to bring to the Alliance. That's logic 101.