To the OP:
I think it is best to have a mix of both, but also have the knowledge and skills for long term plan once you get through the initial SHTF bottleneck. That is what the stockpile is for.
Could I realistically live off the land? I think in a short term. I have wild game on the property. But I also know by experience, just because I have seen deer tracks is not a guarantee I will bag one today, tomorrow, or the day after. Same goes for grouse, geese, ducks, and more. To me, not knowing if I set a dozen traps and I may or may not get one or two rabbits is food insecurity. With my current set up, I can walk into the coop, and collect a dozen eggs. I can put my hand on a chicken, a rabbit, a duck, a pig, a goat a cow, that is a sure thing. That is food security.
As for the gardens, I have rutabagas that have overwintered and seeded out, with no input from myself. Same with dill and some potatoes.
We collect seeds from the best producers of everything we can.
As always, we make note of what works best, what did not work, and try to improve next year.