Haven't read Mozilla's report but I'm in the field and am fully aware. What I can tell you is that at least some of the Motown manufacturers are very privacy oriented at least for now.

Huawei is an unmitigated disaster. Security analyses of their equipment from some years ago showed hundreds of security holes on a single piece of infrastructure networking equipment. Countless vulnerable copies of OpenSSL, you name it. Even if they didn't have any backdoors, the equipment was such a Swiss cheese that you could enter it from many of the gaping holes. The only reason we use it is cost, making the moneys for the shareholders.