Just because UK found nothing doesn't mean others also found nothing.
> "We have evidence that Huawei has the capability secretly to access sensitive and personal information in systems it maintains and sells around the world," Robert O'Brien, national security adviser, reportedly said.
UK government has takes GCHQ to review source code and make spesific conclusions.
The links you provide have unspecified official sharing his views of intelligence of unspesified quality. There appears to be no code review and no spesific information about what information Huawei has access to, which equipment is affected, etc.
I am not sure we can treat this level of intelligence with complete trust, it could be a PR excersise
> "We have evidence that Huawei has the capability secretly to access sensitive and personal information in systems it maintains and sells around the world," Robert O'Brien, national security adviser, reportedly said.
https://www.cnet.com/tech/mobile/us-finds-huawei-has-backdoo...
https://www.wsj.com/articles/u-s-officials-say-huawei-can-co...