Unfortunately there is no thing in the world that is proof from change, especially things you aren't paying for. If you have a problem with it you can use any of the other free photo upload services that will accept 15GB+ of your photos and will guarantee that free service for life.
I don't have a problem with it. This is a good thing for the industry that Google can't continue to offer unrealistic and unsustainable products for free. They set expectations that were hard to meet.
I think this serves as a warning and reminder to users.
They do. Photos uploaded before the change next year do not count.