It would by now be more worrying if he didn't.
But I guess "chinese spies eat telecoms babies" is a much more dramatic headline...
I don't think the US is innocent either, of course tech that we use internally and export is probably backdoored out the wazoo.
I would rather assume almost everything I use is backdoored one way or another, and operate that assumption, rather than assume the opposite to be true and be wrong.
It's not a dramatic headline. Governments spying on each other and their citizens is the boring default state of the things.
Even if you believe the worst about China and Huawei, it wouldn't make the slightest bit of strategic sense for them to implant backdoors into products now, when marketshare is still small and growing rapidly. You'd add the backdoors once you had network dominance, like the US did.
Those tests have usually identified several issues, and Huawei has been slow to address them. For example, one of the conclusions of the 2019 report [1] was that "No material progress has been made on the issues raised in the previous 2018 report" Some of these issues are known vulnerabilities in old versions of dependencies like OpenSSL that Huawei has forked and then neglected to update.
[1] https://www.gov.uk/government/publications/huawei-cyber-secu...