Unsourced claims like this do absolutely no good to anyone, ever. Which means that either right before typing this comment, you though to yourself "time to be a bad person for no good reason" or you're a shill for some surveillance agency with an interest in scaring people away from privacy enhancing solutions.
Well, it is a little weird that Tor was originally a military technology funded by the US Department of Defense. Also, privacy in these days is really hard to achieve.
Yes. In order to launder your dirty traffic, you need to mix it with lots of other traffic. And you need it to be safe to avoid attribution.
The US military (and various 3-letter agencies) needs the service to be secure, provide strong anonymity, and to include a sea of traffic thats mostly not their own
OP is a conspiracy nut who doesn't understand cryptography, know how to read C code, or know how to differentiate experts in these things from misinformation about these things.