These "backdoors" are for court authorized wiretapping (The Communications Act of 1934). This is not some kind of a dark conspiracy. Our government argues that wiretapping is an essential tool for law enforcement. [1]
The NSA does have a program to intercept traffic [2]. But that's not what got hacked here.
I do blame CISA and NSA though for not protecting the system well enough.
[1] https://www.americanbar.org/content/dam/aba/publications/lit...