There's a difference between placing weight and being able to move weight to where it's needed.
If you push both spindles down equally yes you may increase nose weight.
But at the same time your moving the parts you have to operate to accept weight higher up and that causes me to ask you:
If you stick the front end parts up higher isn't it going to be harder to put weight to them to make the front end operate?
My thoughts are it's always easier to get dynamically operating weight to do something for you down hill then uphill.
When we had a push and needed more turn I generally increased how the RF tire was angled to the track when the steering is operated as I thought it would be on the track.
That and I had to make another decision based on how much energy was available to me out on the track to cause the chassis to do its thing.
In general if your going slower because the track is slow then you need to do stuff to make it easier for the chassis to operate out on the track.
If there's grip, speed or hp available you have a ton more on track forces available to you to operate your chassis.
In that case you can make the chassis harder to operate and hold dynamic weight transfer back because you don't need so much weight to move somewhere else.
... so you might put the RF spindle down on a fast high grip track and use less camber because you don't need to knife the RF tire into the track.
... and the opposite when the track slows and there is less bite.
Pretty much I'd say you should not have raised up the front and instead maybe you might have tried lifting up the RF spindle and angling the RF tire more when camber gain occurs to cut into the track better.
This is all about dead recognizing because without having numbers all I and you can do is think about what you need it to do to fix your push.
... or it ain't and this is all just IMHO and ain't necessarily right anyway. ...
ps... sure you could be driving the thing too hard from the back or your going to fast into the corner making it push. But I always think first of doing something to get more out of it rather then to take something away from the back.