While everything you said is correct, at the same time, there's no sense in losing access to data that's recorded and is sitting right there for the taking, if only there were a more convenient way to extract it.
It would be very wise of Twitter to offer a bulk export function - not because they have to, but because it's to Twitter's benefit to not have me thinking twice about whether I should post to Twitter or communicate in some other, more archive-friendly way.
It would be very wise of Twitter to offer a bulk export function - not because they have to, but because it's to Twitter's benefit to not have me thinking twice about whether I should post to Twitter or communicate in some other, more archive-friendly way.