Exact. Except 150g weight difference even up a 2h climb results in a rounding error. Your body weight will fluctuate more than that over such a climb.
1. wrong, literally by definition / mathematically.
2. wrong, i guess you dont do much riding.
3. wrong as proven even by GCN IRL, i think they did the same mountain pass with / without an extra bottle and couldn't see a difference. Or mathematically, you can input a gradient, 2 different weights, and see the watts difference required to get up. it system weight is 85kg vs 85.2kg, good luck finding a difference IRL.
You might be a troll given this is your first message, idk. If you really mean your message, truly, you're years behind the curve.
Sorry, not trying to troll here. And maybe I didn't explain myself at best, fair enough.
But what I'm trying to say is, aero gains are not only determined by the bike but also by the rider and the rider's position.
You can ride an aero bike, but if you can't maintain an aero position on it for a few hours, which I think most ordinary people can't, what's the point then?