If I ran into the basement and grabbed a bike for a century, it probably would not be the Birdy because I've got a perfectly fine non-folder which is way more suited to the task.
If the 8sp Birdy was all I had, I'd not hesitate to grab it for a century, and it might rise to the top of the pack if I had to travel by air to get somewhere to do the ride.
And there's other folders and packables out there which would be well-suited to the task. Many more which could be pressed into service.
If that's your thing, go for it.