I assume that they're referring to the great browser wars, where Web SQL was abandoned in favor of IndexedDB because the former was essentially a call out to use SQLite as it is. Many argued against a single implementation because it didn't have an underlying high level specification that would allow for other implementations.
Why are you assuming I am referring to anything? I simply said I don't completely understand the parent comment and would like some examples. Maybe you intended to respond to another comment?
