There is no evidence Chinese network gear has any security problems.
Oh yes there is, just not the "back door" sort but the piss-poor standards sort:
https://www.theregister.com/2019/03/28/hcsec_huawei_oversight_board_savaging_annual_report/
Flip side is Cisco, etc, are also regulars on the high score CVE list and often as piss-poor in terms of fixing things:
https://www.theregister.com/2023/05/05/cisco_phone_adapter_vulnerabilitty/
So really it is currently a 1-1 draw in terms of being hacked. Of course a move to proper open-source / open-design with everyone independently and publicly vetting it would help but that is not going to get much in the way of corporate backing, or more to the point, campaign donations.