To be fair, their main competitor, Cisco, has had a significant number of hardcoded password backdoors found in their products. While their reporting and patching story is better, their security track record is still awful. It's believable that Huawei as awful security and backdoors, but that is just as bad as Cisco. The real difference would be if they were actively aiding espionage, which has been talked about a lot but never backed up with evidence.
https://www.tomshardware.com/news/cisco-backdoor-hardcoded-a...