The filesystem API was also nixed, so now people take to implementing fake filesystems on IndexDB, and implementing fake-SQL on top of IndexDB. On top of that, IndexDB performance isn't as great as it should be.
With something like SQLite, I think it's fine to take a super mature platform and retroactively extract a specification from it (while 99% of the people just keep the original implementation), than to start with a crap spec and try to make it mature.
IndexDB set the state of offline storage back, meanwhile Android and iOS developers are using SQLite or equivalents.
Well, that's good to hear. My concern is, we need APIs that are predictable, straightforward, and easy to use for devs to create offline web apps. Right now, it's quite difficult, and hence hardly anyone does it. ServiceWorker may help a lot with one part of the equation, but it doesn't fix up the persistent storage story of the Web.
I find the IndexDB API maddening to use personally.
It was Mozilla's insistence on IndexedDB that tipped the balance. WebSQL was already well supported in Chrome and Safari and if Mozilla hadn't inexplicably come down on Microsoft's side we would have a reasonable client-side database solution today.
I agree that IndexedDB is awful and WebSQL was much better, but go shout at the W3C, not Mozilla.