So a Hong Kong (IE: Chinese) owned company is complaining that they can't currently use Chinese products to roll out 5G...and a company called Finite have just released a report that says that more than 50% of Huwawei networking gear has vulnerabilities that include potential backdoors and remote execution and are doing nothing to fix them.
If the security of their gear cannot be absolutely assured (independently) and the company can absoloutely prove that there are not acting in anyway on behalf of or at the behest of the Chinese state. Then they shouldn't be allowed to supply gear into sensitive areas that could potentially compromise security of anyone (national, private or anything else).
I make no statements that are are acting on behalf of or at the behest of any state actors... But whilst the risks to security exists and if the report is accurate. Then... yeah, they should be blocked from supplying gear.