100% a skill issue, but I can't help but feel like boots on the ground is the least rewarded/satisfying playstyle

Specifically the "Non-camping" variety, like pushing hotzones actively.

And my issue isn't even that visibility itself is poor, but rather that it's basically impossible to discern where the " battlelines" are because the Hotzone is constantly shifting. So no matter where you approach it the hotzone from you're liable to get lit up either from the nearby tower sightlines or just any random person hiding in a building/bush/shadow.

This is in addition to having to deal with Minigun helis buzzing you and tanks rolling up for kits that start approaching the 7-10k mark which is basically 2/3 of a vehicle but with 1/5th of the survivability/opportunity to earn it back. Combat Vehicles feel like they should cost 2-3x the absolute best trooper kit at minimum and yet they're virtually comparable once you factor in ammo, meds and utility.