Yes, thanks @sualipa for the link.
There's quite a long critique from nature writer Quintin Lake, 'author of The Perimeter: A Photographic Journey around the Coast of Britain, spent five years walking the coastline and spent a lot of time on the South West Coast Path.'
'Lake says that he found much of The Salt Path implausible, from Winn’s descriptions of locals treating her and her husband badly for being homeless to the ineptitude of their camping setups.
“A couple of times, people mistook me for being homeless because you have a little tent by the coast and you’re by yourself in crappy weather where there’s no tourists. But I found that there wasn’t any prejudice and that people were quite kind and neutral. I found the British, universally, were pretty understanding in that,” Lake says.
“From the practicalities of camping and backpacking it seemed like [the Winns] were so hapless about how they undertook it that I found it hard to understand why you wouldn’t improve. Obviously they were middle-aged people that were suddenly chucked into needing to camp, and that’s not easy for anyone,” he adds.
“But if you’re making it a lifestyle, you tend to learn how to work around it, how to camp in the lee of the bays, how to camp out of sight. My eyebrows would raise when I read it because, yes, it’s tricky for a bit, but then you sort of figure it out… Especially if you’re travelling for months on end. If you don’t, you’re totally screwed.”
Plus some quotes from locals in North Wales who remember Martin Hemmings fondly, including one who 'only discovered that the Walkers had “just disappeared” overnight in the early 2010s through word of mouth.'