Ending support for hardware made exclusively for an online platform with no offline or local network support is infuriating.
I think it depends on what every other customer does now. If everyone floods the second hand market with second hand, soft-bricked cameras because Amazon hates the planet for some reason, people might buy them and hack them.
I don't expect anyone interested in running their own firmware will be buying spyware from Amazon, though, so existing support is pretty much non-existent. It's only a matter of time before someone will take this opportunity to find security flaws in the software, which will no longer be patched, and hopefully you'll be able to use your camera again.
If you have the space, stuff it into your attic and wait, or get hacking yourself if you have the time. Otherwise, at least take it to a recycler to lessen the environmental impact of this crap just a tiny bit.