The show is worth watching, just as a show, even if you disagree with the message. It’s unique in its presentation. The single cut style looks like it might hide some subtle cuts (I don’t think so), but it’s actually quite impressive. The topic is interesting and can spawn interesting conversations.

Every long oner has hidden cuts. These range from really simple, like something moving across the foreground to hide a wipe, to really difficult (expensive) like fully CG doubles to merge shots (probably too expensive for this TV show).
I would suspect that at least 80% of the time, when something (or more often someone) moves accross the whole frame in front of everything else, its obscuring a wipe to the next shot.

He could be lying, but the cinematographer for it says each episode was a single shot

“There’s no stitching of takes together," cinematographer Matthew Lewis told Variety. “It was one entire shot, whether I wanted it to be or not.”

Seems rather poetic then factual statement - what does " whether I wanted it to be or not." in this context even mean?

I think it’s refering to that they were only using a single camera and that the episodes were performed all the way though (up to 16 times per that article) on location without stopping. With those constraints there isnt really a way to make cuts.