I think the problem is the attitude: there's no need to roll this functionality (which everyone is using) into the core product, because there's a plugin/extension/addon that implements it.

That'd be fine, if there was some kind of editorial control over the addons available. For example: the "We recommend" addon at the moment is "FoxyTunes", which allows you to listen to music from your browser. WTF? It's a web browser, not a music player.

Similarly, number 5 or 6 in the list is a management console for SQLite databases.

I thought this was a mail client.

I vaguely recall seeing an addon that showed you whether it was hunting season or some such nonsense -- in the status bar in Thunderbird.

Hey, sure, if you release an extensible application, people are going to write stupid plugins for it. There's no need to put them on the front page of your friggin' website.