Banks are a lot like shoes; some fit you better than others, something that fits you won’t fit me and vice versa.
You don’t have to have your eggs all in one basket. Open a Chase account, see if you like the app, the speed of things, does it do what you want it to do. If it works for you, use it more, use it for everything or don’t.
Interest rate is good. But you can put that there and leave it. You can still use Monzo.
1% cashback is nice. That might be enough for you to switch, for some people Monzo performs better and the 1% isn’t worth it.
All you can really do is try it for yourself. It won’t cost you anything and you don’t have to commit.