If you're placing the force in line with the weight to be lifted, i.e. not a highlift, and what you're using to create the force isn't a total piece of trash, jacking a truck offroad is all about site prep. What is creating the force doesn't matter, as force doesn't know. Scissor jacks have friction, but no seals. They also aren't 100% rated from flat, but for something like my mgbgt, I stuck the stock death trap on the shelf and put an old astrovan scissor in long ago.
Now, due to the nature of the mechanism, a scissor jack is easy to mass produce extremely cheap compared to a bottle jack, and that's why they are popular to place in cars. There's no reason a quality scissor jack cannot be made, and in fact the one I noted above was a pleasant surprise. You wouldn't say "all wrenches are garbage" because the cheap POS that came with a '72 triumph in the tool kit was hand cast with 70's third world tech.
I cannot think of a scenario offroad where the mechanism creating the direct force has any bearing on whether or not using it is "valid", assuming all other site prep and quality issues are equal, especially because the proximity of the user to danger is exactly the same. I also can't come up with a use case where the convenience of the stretch here is worth the price, weight and ridiculous size of the mechanism in a truck so short on storage as it is. This is a quick and easy contraption fit for a 1 ton offroad Merc van or something similar with excess space where it can maybe double as a leveler, not a Gren.