My view is they are people who want free stuff and will say anything to get it. In fact I often think they do more damage than value add.
I have stopped watching Trail Recon for example because he is now bought and paid for, can't believe anything he says.
I do not like shells.
They severely limit the usability of your bed (No side access, no ability to put tall things in bed, cant use a goose neck, etc). I have 40 gallon refuel tank in my bed, would not work with a shell. Works fine with a rack...
Exactly. I can use the scissor jack (from an H1 Hummer so it is plenty rated), to gert under frame when axle is down to ground. Then when that lifts, I can use the bottle jack to get to height. The 2x4s are for support on soft or unlevel surfaces, and to get additional height if needed.