@herzog Here is Arduino's response:
https://blog.arduino.cc/2025/11/21/the-arduino-terms-of-service-and-privacy-policy-update-setting-the-record-straight/

I don't know if the situation is as cut-and-dried as it is claimed. I did a half-assed search through their Terms and Conditions and what is in the Adafruit post doesn't jump out at me. For instance, the only military thing I saw was a prohibition on its use by the military, a prohibition of its use if the end product will be used by the military (such as building UAVs), and calls out specific countries where one has to certify they are not a "military end user" as defined in the terms. These things all sound like good things, I would argue, if one is concerned about the building of cheap autonomous drones used in battle.

It would be helpful if Adafruit provided a bit more specificity. I didn't bother looking at the Arduino Privacy Policy. It would really be helpful when these things are updated if one could compare the new with the old side-by-side.

One thing that certainly jumps out and hits you in the face, and I don't know if this was there before, but right off the start they say you have to agree to arbitration for disputes. It is a big section before the terms even are laid out, then repeated in the arbitration section. That, clearly, is very important to them.