You're moving goal posts. I would say if they had to ask for a different SoC to be put in a smaller chassis, that is custom work, and has risk.
Supposedly they are a subsidiary of AGold Communication Co. Ltd. which claims to have manufacturing experience, though their website is sparse and they have really old phones on there.
Even if they didn't wholly design it, I don't think it's fair to claim they are marketing a cookie-cutter design you can easily obtain off Alibaba, since you can't.