Does anyone know how to obtain 3000 beanbags for the Rainbow Beanbag Trophy, even though there's only 2049 beanbags?

You can't. This is something that has been asked about multiple times already since collections were updated and keeps slipping through the cracks. I'm not sure which staff member to ping about looking into this now, but I wish it could actually be fixed finally.

Thank you!

oh, i never realized there was this discrepancy in that achievement o.o ouch, subeta staff ;p id assume Amber would be someone to bring this up to..? but shes on a vacation now..