R18, bud, just got a min to skim through your video.
There is nothing wrong other than you literally never put much force on it the way you were using those channel locks sideways and you never really hit it with the screw driver and trim hammer.
If you haven't gotten it off by now. It's just a little boogered up thread on the spindle or nut making it a bit difficult.
Yes I use an impact and socket, but first, assuming those are the most imposing tools you have, turn the biggest set of channel locks 90 deg form how you were tryin. Adjust them so you can get a good clamp on them and it'll probably spin. Or get a bigger hammer and hit that screwdriver like you mean it. (If you miss it don't hurt for too long, lol)
OR get a big crescent wrench as suggested or the right size socket. Bet you a 12 pack either will spin it off of there fairly easily.
