My (personal) thinking is that they did some walking, and a few overnights.
But nothing like they've claimed.
Descriptions don't match up, timelines are impossible, incredibly hard terrain magically conquered, all living off megre calories and not even well equipped.
Also - this one is hard to describe - but I've completed quite a few challenge-type hikes for charity across the UK (100km+) and it's tough. Blisters are the least of your worries but SW never touches of any experiences I've had while walking very long distances.
And I've never met one unkind person during my walks. Never been judged or had any nasty comments or turned away from anywhere. Not once.
Never been told I've been salted by some sage woman, either.