Look, there's a fine line between 'good challenge' and just tedium. Dealing with ensuring you have consistent food and water supplies takes up a good amount of time already, leaving little time to actually make forward progress. I'm currently in a holding pattern trying to get enough iron to make my first Pressure Chamber as it is, generally having to spend 50 percent of my time doing maintenance on my food and water supplies while the other 50 percent is farming up the, ah, 48 or so iron bars (not counting the loss on conversion to Compressed Iron as well as the need to spend some on shears for efficient water/dirt creation).
Complaining that soybeans (or other food items) are OP seems just... excessive. There's a limit to how much arbitrary challenge you can pile on before something becomes more of an exercise in masochism than a valid challenge.
Besides, you can't claim the pack is about thinking outside the box when /everything requires you to learn PneumaticCraft/. More like it's about 'thinking inside the pressurized box and praying it doesn't explode and ruin a few hours of iron farming'.