I'd still go for Flutter, no dependency hell, easier to setup, Dart language, and Flutter is way more performant. It looks difficult but it's really easy to pick-up. You could also choose to write your REST API in Dart :P
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
I'd still go for Flutter, no dependency hell, easier to setup, Dart language, and Flutter is way more performant. It looks difficult but it's really easy to pick-up. You could also choose to write your REST API in Dart :P