> the modern day problem of “I must protect myself and others from malicious modifications”. Stallman hasn’t been of much use for this
Clearly we differ, because it looks to me like Stallman put forward the only plausible solution to someone taking control of my system without my knowledge or permission: open source. Granted, that wasn't what he was trying to do at the time, he was as you say perusing the "It is my right to modify" line. But that's how it's turned out.
You are apparently perfectly happy to have Apple / Google / Microsoft or whoever install whatever backdoors and spyware they please on your system. It's not like you have a choice, or will even know, so it's probably best you've made your peace with it; just as people have made their peace with Facebook, Google Chrome not deleting their own cookies, or Microsoft refusing to copy files because some virus checker had a copyright violation signature fire (that's actually happened to me).
Maybe I'd even be OK with trusting those companies, but I definitely draw the line with governments granting themselves the legal right to rummage through that same cookie jar, which is exactly what the Australian government did with it's Assistance and Access bill. [0] I'm sure all governments do the same thing of course, including the Chinese government. A good indicator of how seriously the governments themselves take this threat is how Huawei is being treated by Western Governments. I have no doubt the Russian and Chinese view western gear with the same level of suspicion. To me that is the only sane position to take.
Just to be clear, I'm not saying TPM's and the DRM they enable aren't useful, but the problem is the lack of visibility into what these black boxes you are carrying around with you and putting in your living room. If you know what those boxes are doing, locking them down so hard they can’t be compromised by someone who has physical access to them is a nice addition, although the threat scenario (someone who has physical access) is very limited so perhaps not a major addition. But what you seem to be applauding is locking them down so hard even you, who has physical access, can’t see what they are doing, and then you go on to pillar a person who proselytized making all software transparent, so everyone could see if there systems system are running software they approve of, and not malware or worse.
[0] Quick summary: the Assistance and Access bill gives the ozzie government the right to force any company to write spyware that won't be detected by their OS's (that's the "Assistance" but), and then install it via their auto patch systems onto to device they nominate (that's the "Access" bit).