My experience has been different. Considering how easy the application is I think they're still being fairly generous as I've been offered multiple v3-8s and v3-32s x 30days as well as pre-emptible v3-64s x 28 days for a few different projects within the last 6 months.

Are you affiliated with an academic institution? Otherwise I'm not sure why they're been more generous with me, my projects have been mildly interesting at best.

They're certainly a lot stingier with larger pods than they used to be though.