Um... this is new to me and I have no idea. I have a CN version Mi8 and has .EU version rom on it right now and it runs fine. I can't confirm if the newer products have this restriction on them or now.
小米有品 is a platform by Xiaomi to advertise and sell items that they deemed to be good. It consists of items made by Xiaomi subsidiaries and companies that have no connection to Xiaomi.
I don't think they deliver over-seas so ... you can remove it if you can.
That is unfortunate.
Xiaomi officially said there will be a version push to beta testers to upgrade to stable without having to clean flash. Would xiaomi.eu have the same feature later on?