Flutter is interesting. Instant run, interesting language. BUT, we love Delphi for good and convenient working with DB, incredibly fast creating UI mock. And I'm sure the biggest part of developers in this forum has a lot of existing Delphi code, which is very interesting to run in mobile platforms. So I believe Flutter is not a magic bullet. I'll say the obvious thing, but each technologies has advantages and disadvantages for each project. So everybody select solution based on his own preferences.