> Worst of all, there are no frequent updates (if any), no autoupdate either.
Is a little odd. Didn't you install the L developer preview by manually downloading the ROM from here: https://developer.android.com/preview/setup-sdk.html and then flashing it yourself? Then you're strangely shocked there isn't a consumer-orientated auto-updater?
I can absolutely see that criticism if the auto-updater didn't exist, wasn't working, or there were no updates upon the retail release of L. For a developer preview you personally installed knowing full well it was a developer preview that criticism is hard to take at all seriously.