I couldn't agree more,
"""In other words, I believe there are blind spots because Flutter team members don't actually use Flutter."""
Electron creators made atom, the best text editor, and then vscode,
And flutter doesn't have a signature app to show that it can be used for serious purposes.
Currently, the most famous open source app in the community is appflow.io, I compare the current state of appflow.io to the current state of flutter, even the unfixable bugs.
I compare vscode to the JavaScript ecosystem, with both advantages and disadvantages,