I'd argue it's not been worth it for a long time. Also raising prices may not be that bad but limiting your access to only one IP adress preventing password sharing definitely is a dick move.
The voting will stay but your homepage will be a for you page that selects posts based on your usage data and whatever is trending instead of the votes, in an attempt to bring engagement to a maximum. Just like what's been happening to Instagram for years.
You pay to be able to use your account on a certain amount of devices. It shouldn't matter where those devices are located.
A windows license is just for one device so your comparison doesn't work.