I was fully converted to Revolut last year. App is great, and i had a few interactions that built trust. Paid salary in there and had a large sum building up.
I have recently decided to revert to the established bank - after hearing too many tales of people who were scammed not getting support. The stories may exist for established banks too but I have not heard them, and for the sake of an amazing app I don't want my life savings lost in a scam.
The fees on the savings are unsurprising though, the biggest users of Rev will be in their 30s and 20s, and many of them do not got a clue and make no effort to gain a clue. Revolut could make the fee 3%, they do not understand it. They like the flashy app though. I'd do the same if I was running their business.
I have some sympathy for banks pushing bank on refunding everyone from scams too - some people are beyond naïve when they react to a WhatsApp or scam phone call. However, for every 100 scams there is 1 or 2 extremely sophisticated, and even the best of us could be fooled if on an off day, or in a rush. I want to at least feel my bank will support me on that day.