I'm surprised that, as the price increased, there has not been a mechanical automation found that would remove the labor requirement. Terrible for developing countries where labor is cheap and depends on that laborious task of harvesting threads.
A Swedish company which produces saffron uses some robotics.[3] There's a German student group doing something. Nobody has video of anything working.
It's probably do-able, but too niche to justify the effort.
This 2018 "automatic saffron processing machine" looks fake.[4]
[1] https://www.solbartech.com/about/
[2] https://www.isaffron.life/