I traveled ultralight until I got into landscape photography. Those tele zooms are heavy AF. I got bigger quads and biceps.

Try out Micro Four Thirds. I have an OM-5 as my secondary camera and it's great for hiking, etc.

Are you shooting full frame?

Landscape photographers do not consider the 35mm format to be "full".

Any photographer who pretends to not understand what the term “full frame” is referring to is an asshole.

Zoom on medium format? what's the point?

I don't like camping or hiking deep into nature, but I do like rucking, my bag empty weighs 5lbs, and then I put a 30lb steel plate in it.