You're subscribing to a very America centric world view where the US is the only technologically advanced society.
Countries are worried about corporate espionage. Which is also what America engages in.
A backdoor for the NSA also means a backdoor for anyone else.
TPM is a standard as well.
Is every TPM manufacturer also co-conspirators?
I mean... yeah,
at face value assuming the NSA would push for a security solution that in the longterm is
not going to be secure because they have a backdoor now, and its inevitable someone else will find it does sound tinfoil hattish.
But that's literally what they fucking did with
DES.
And Snowden made it clear they have zero compulsions about widespread spying on everyone, ally, citizen, or enemy alike.
Plus all that smoke coming out in the last few years about magical secret chinese hardware backdoors, and pressure to not use huawei products seemed an awful fucking lot like projecting an assumption that china were catching up to the level of intrusions the US already had active.
USA still Numbah One at cyberfuckery