Me too :) In that thread they talk not being able to install unsigned extensions in stock latest Firefox. That hasn't been the case for me. It might be because

Me too :) In that thread they talk not being able to install unsigned extensions in stock latest Firefox. That hasn't been the case for me. It might be because I'm on Linux, but I'm pretty sure that policy changed. Overall, I have a lot of sympathy for Mozilla deciding not to spend their resources defending defeating paywalls.