What is the alternative?
It is a little bit weird, certainly for 5G.
In 5G there are really only three suppliers to choose from: Huawei, Ericsson and Nokia. None of them are American (although both Ericsson and Nokia have some US operations, including parts closely linked to the US spooks). I get that the Americans might feel that anyone non-Chinese is a better bet than Chinese but this seems quite an extreme position to take with allies given that no US company will benefit.
Of course, in the core it is different. Two major suppliers (Cisco and Juniper) are US companies, and maybe this is mostly directed at that selection.