What's there to believe? Getting fooled every once in a while is fine. Being wrong and learning from it is how you grow.

Ok, now what?

More like there just needs to effective legislation passed that curbs data collection and surveillance. They all do it because it is legal and very profitable. The only difference between Huawei and Samsung is who is doing the collecting. Governments and companies get too much value out of the collection though, so it will likely never be regulated.

China is a threat, they don't even really try to hide that fact. Could this be used as a distraction from domestic issues? Of course, but that doesn't mean Chinese surveillance equipment inside of sensitive areas is a good idea. Because it is a terrible idea. Would western countries do this to China if they could? Yup, but I would bet anything western tech isnt being allowed inside sensitive Chinese government areas.