Doesn't the NSA end up using these machines as well? It seems like a lot of work to introduce a flaw that you have work around for you own use later. And if it'

Doesn't the NSA end up using these machines as well? It seems like a lot of work to introduce a flaw that you have work around for you own use later. And if it's a hardware flawu, I doubt even the NSA could demand intel or amd manyfacture seperate batches for their own use.