Between 1 and 10 thousands of days, so 3 to 27 years.
A range I'd agree with; for me, "pessimism" is the shortest part of that range, but even then you have to be very confident the specific metaphorical horse you're betting on is going to be both victorious in its own right and not, because there's no suitable existing metaphor, secretly an ICBM wearing a patomime costume.
While it's not really _wrong_ to describe two things as 'a few', as such, it's unusual and people don't really do it in standard English.
That said, I think people are possibly overanalysing this very vague barely-even-a-claim just a little. Realistically, when a tech company makes a vague claim about what'll happen in 10 years, that should be given precisely zero weight; based on historical precedent you might as well ask a magic 8-ball.
A range I'd agree with; for me, "pessimism" is the shortest part of that range, but even then you have to be very confident the specific metaphorical horse you're betting on is going to be both victorious in its own right and not, because there's no suitable existing metaphor, secretly an ICBM wearing a patomime costume.