For this one I'm not sure:
https://github.com/mongodb-js/vscode/blob/1e98a4e9634fe1f298821a1b894b9a5e24902522/src/explorer/databaseTreeItem.ts#L199-L219

My guess is that validateInput is not called synchronously (ie. directly after `vscode.window.showInputBox`) so the try/catch won't catch things in there. Therefore I think that try/catch is probably doing nothing. Similar thing everywhere else we use showInputBox.

Then there are things like this:
https://github.com/mongodb-js/vscode/blob/main/src/language/mongoDBService.ts#L199-L220

on('message') almost certainly happens asynchronously and that try/catch only covers the initial synchronous setup.

I don't know about token.onCancellationRequested. something might await that promise but that thing isn't being awaited in turn, so the catch wrapping it probably isn't doing much.