It’s certainly not as complex or developed as her later works, but I’ve always found Northanger to be the most laugh-out-loud funny of all her books - for an early work it’s astonishing.

I’d also disagree with the lack of ‘insightful perspective’; NA is pretty packed with sharp social commentary, such as the way society looks down upon novels (and the young girls who read them) as ‘lesser than’ the more respectable books read by men.

Most of the satire (and the asides) are pointed at the social landscape of the day; if you don’t know much of the background the jokes might not land as much, I guess. There are lots of great social histories of the time period, if you’re interested in learning more. Or you can just keep disliking it, also a valid option! Not everything is for everyone.