That's always how imports work, you can buy basically anything that's illegal to be sold but not illegal to use in your area by importing it from somewhere else. It's where people are getting flavored tobacco.

The logical conclusion that "for the protection of local business we have to allow everything" is a bit absurd. You can still buy it but you can't buy it here is a pretty normal compromise, would you rather it be enforced and you be charged with possession of a Huawei?