Again, there is sooo much talk around it in all directions. But has there actually been a backdoor exposed? With all the attention turned towards it and that

Again, there is sooo much talk around it in all directions. But has there actually been a backdoor exposed? With all the attention turned towards it and that it has been a topic in geopolitics since years - there should have been some ressources allocated towards some reverse engeneering, that clearly shows it is not trustworthy? If not, why not? I mean it surely is not easy - but I always only hear blame without proof. (And I don't need proof, that the ccp is not nice. I know that.) In either case, my takeaway is, that we need more open hardware, that can be easily verified to do what it claims.