I concur, and given the amount of apps they build it makes sense to spend the money on a good build server to me, especially if it is someone with experience hosting trusted servers as mentioned as well as a contributor already. If people do not want to use it, the source code to build yourself is still available for the apps they supply.
They can then probably whip up a new hosted server to take over within a few days, at most. Big deal.
They are not hosting a critical service, and running on donations. They are doing everything right.