Vessbot Not in perfect agreement, mostly with the interpretation how that applies in our case but things may have gotten lost in translation.
Along these lines: if that aeroplane from the graphics had a better wing (longer L vector) it would climb faster - I really wish not to be wrong about that.
To make it climb steeper
as it is, tilting the vectors, can only be achieved by adding more thrust to keep the equilibrium. No dispute there, the fact that showing throttles forward is needed to go up is not yet lost on this magenta child. There's hope yet
Similar to the extreme example of viper's temporary rocket dynamics, but on the other end: I think both of the above points need to be accepted to call our understanding complete - even before looking at a drawing where T = 1/4 L and the gamma angle is 1.4 deg.