Where did you hear you need to make a donation to get access to ARM builds of AROS?
This idea is absolutely bizarre and completely incorrect.
How did you even come to this baffling conclusion, or who told you and how did they come up with this creative idea?
Want to download AROS for ARM? Simple, go to aros.org and download the latest nightly ARM build. It's as easy as that. No compiling needed, no money needed, just download from the site.
Far from important, but Im somewhat curious where all this garbage misinformation comes from. It's clear as day what the truth is. You just need to check the website.
To be fair to Lou, there only appears to be a Linux hosted armhf download available on the arose website, not the native Pi version.
Though I suspect he's referring to Pascal's Aeros distro for Pi here.