I buy Huawei gear and dislike my government attempting to limit my free market choices. Cisco was (is) just as vulnerable, people just don't talk about it because they have so many lawyers. https://artkond.com/2017/04/10/cisco-catalyst-remote-code-ex...
Free market choices in this case have hidden costs. Huawei was selling hardware with user manuals from cisco because they were exact copies. When IP is stolen, countries lose incentive to invest in R&D. Note almost every major Bell-labs era research center has been shut down or dramatically weakend, the most recent being Dow/Dupont.
But it's ok for Huawei to sell to Australian businesses and consumers. So much for government protecting its own people.