I don't think so. The foundation probably doesn't have anyone anywhere in Asia with a bank account that can receive Paypal donations. The idea is to save transaction costs, not limit donations to certain parts of the world.
A mips32 port would also be very desirable for all those shitty little routers with their ancient Linux kernel, but sadly nobody is working on that at the moment.
So, should the network and firewall OS that many people claim OpenBSD is, slash its support for MIPS devices?
This discussion comes up every time only because some people seem to think OS development is like racking new x86 servers running RHEL.
Many of the machines do not have LOM. They have hardware failures instead. They hang because they get trashed building OpenBSD and ports pretty much 24/7. There is debugging and serial cables going on. Someone needs to push that NMI button and check the LEDs flicker like they should. Reboot them. Constantly update to the latest development version, making them panic quite a bit. Diagnose that. Installation procedure requires console access, monitor adapters, weird keyboards, ... They don't fit in racks properly. There are security concerns. Etc, etc.
It's wrong to think of the machine room as rack space than can be had for cheap somewhere else. It's much more like a lab (with the mad professor living on top, controlling the experiment).