The following is my opinion, and is not intended as an insult to anyone on this forum:
A lot of "knife guys" are going to dislike anything with a sawback. A lot of those same guys will dislike anything even vaguely associated with Rambo.
I think is has something to do with not wanting to be associated with all the Rambo-wannabes that started carrying large sawback knives after those movies came out, or they may have been soured by all the low-quality large sawback knives that have surfaced since those movies.
This has nothing to do with the practicality of these particular knives, some of which are offered in various steels and various configurations (including optional sawback).
The bottom line is this: if you have a use for a knife of this type, the price is within your budget, and you like these knives, it doesn't matter what the internet experts have to say about it.