Range Rovers are not cars they are a hobby. If you want trouble free reliable transport, get a Toyota or a Kia.
Or stick with LR/RR but go for an earlier model, later models = greater complication = more to go wrong = greater expense.
Sadly you are right, the brand's reliability record is appalling considering the showroom price, only coveted by those seeking a status symbol. I've never owned (or desired) one so cannot comment as to whether or not they are overrated, but they are certainly overpriced.
The brand has long since lost it's way, but JLR can sell every one they produce so why should they care ?
Salesmen love to say 'a lot of car for the money' but that quote is reversed when things go wrong outside the warranty period