I’m a web and mobile app developer I worked with ionic , angular , flutter , nativescript.
The most important thing about flutter for me that it has this website https://pub.dev/
which contain all plugin and you can sort it by rating, recently updated and more.
Because of that i can build app very fast and its so reliable all plugin are in one place and i can see the maintenance and rating of it.
Why it is important: maybe it is not important for company that want enterprise app but for most developer and freelancers its rely helpful these kind of service.
My suggestion is ionic and capacitor have something similar to that it will be great , because i love ionic and the team behind it they are doing really great job.