I believe the essence of bushcraft and survival is to familiarize yourself with as many techniques as possible using as many different tools as possible. We can't limit ourselves to one style or one certain type of knife. I have used everything from flint knapping to american tantos. From hawks to double bits. They are all beneficial. There are knives that I do prefer, but I don't limit myself to those. When I was fighting I had to study my opponent's previous fights to become familiar with their style. Same with survival and bushcraft. Adapt and overcome with whatever is available. It would be wise for us to practice our woods skills with as many different knives as possible, fire starting methods, traps, etc., etc.
The majority of people who degrade tantos don't own one or have never used one. Especially on forums. They talk about how good or bad knives are that they don't even have. It's funny, actually.