No doubt, it's excellent for archiving, but that's not the same as "preserving" culture. If it's not alive and kicking it's not a culture IMO. You see this happen even with texts : once things start being written down, the actual knowledge tends to get lost (see India for example).
This "AI to help low-resource languages" thing is a big deal in India too, but it just feels like another "jumla" for academics/techbros to make money. I mean, India has brutal/vicious policies that are out to destroy any and every language that's not English (since it's automatically a threat to central rule from Delhi), but pretty much no intellectual, either in India or the US, actually cares about the mass-wiping out of Indian languages by English... Not even the ones who go "ree bad British man destroyed India" on twitter all day.