It also setup in such a way as to not cause a downtime if the checker goes down.
Oh? Would the fallback be that it simply doesn’t do a check? Or perhaps it could disable image uploads if the checker is down? Something else? Presumably, this would be configurable.
Factorio’s art style may draw its inspiration from older games that had technological limitations that forced specific art techniques, but I’d only be guessing — I haven’t found any official source that states where Factorio drew its artistic inspiration.