But nobody was doing that, in this case? There was no mention of 'giving grief'.

The husband voluntarily shared his location for practical reasons, a few times she happened to see he was stopped at a bar or a fast-food place instead of work where he claimed, and that was a weird phenomenon that impacted her trust in him. She realised she was getting too obsessed looking at his location. They later divorced for entirely unrelated reasons.

This isn't really that wacky.

saying this was "unhinged" and "a screed" to me implies that the whole scenario, and the writer, are both in some way unreasonable and that how she reacted was completely beyond the pale.

sharing location access, though I don't love it, has become pretty normalized.

catching your husband in an already struggling marriage in a lie would tend to make a person suspicious. you might even start keeping a closer eye out for other lies. This woman got way too invested in that, obsessed with checking it, and openly acknowledges that it was unhealthy and bad, and probably contributed to their divorce.

Bad (but relatively normal for the scenario) behavior does not an unhinged screed make

If I wanted to constantly be tracked by GPS and give reports on my position, I'd become a pilot. At least I get to fly a cool plane that way.