I agree with all this. The standard BS argument is:"I bought it so I can do what I want with it". No. You bought hardware plus an agreement on what you could and could not do with that hardware. Sony has the right to take steps that ensure the hardware is used as it intended, even if that means to add or remove features-like support for OtherOS. You don't agree? Don't buy the hardware.
I'm surprised by such sentiment in an Amiga forum. We're the guys that put our motherboards into tower cases, doing a lot of work to make it happen. We have build yourself CPU accelerators, added PAL/NTSC switches to single mode computers, there's CHIP RAM addons like MegaChip, video flickerfixers like Indivision, and PCI busses like Prometheus and Mediator. If we're supposed to f-ing leave stuff the way it came from the factory, then there's a heck of a boatload of wrongdoing in our entire history.
If you want me to abide by some agreement to not tinker with the things I buy, then put it on the OUTSIDE of the friggin box so I know it before I pay up. If I don't get an opportunity to know such things until after I've paid, sorry, I really don't feel very strongly bound by it.