And seemingly against what the poskim say (despite your “lack of clarity”).
Where and which one and what? Please be specific, you’ve thrown around too many Marr’e Mekomos at this point.
The point I was trying to make with the post you quoted is that the Be’er Moshe brings from the Chazon Ish that a man should make sure that he gets a seat so that there are no Negiah issues. If that is what one holds, the way to do so on an airplane is by buying a larger seat or two seats.
The lack of clarity was regarding the Teshuva of Rav Vosner, where the question is Histaklus vs. Negias Begadim. Rav Vosner says stand and look away. On that I have the question of Ikah Darka Achrina of a cab, so looking away is still B’geder “Rasha” to put oneself in such a Matzav (as per the Gemorah in Bava Basra).