Adobe has known for many years that most of its users are pirate and so it is just trying to combat that.
Counterproductive. Piracy can't be stopped--all DRM can and will be broken. Any attempt at prevention inevitably alienates users and creates more pirates. As does price gouging, which was the root of their piracy problem in the first place. If they really wanted to minimize piracy, they'd have to lower their prices and be more ethical, i.e., by respecting their users' property rights (preferably by throwing the entire EULA concept out the window).
I doubt it's about piracy at all, though. Much like certain game companies, they want to be able to, at any time and for any reason, flip a switch and kill the product, forcing everyone to "upgrade" whether they want to or not. It's taking the old concept of planned obsolescence to an extreme--rather than simply building cheap products that will quickly break, they're going to break them themselves, and on a schedule. They want to ensure their continued profitability without having to worry about their new product ever actually being a worthwhile improvement over the previous one. Every corporate suit out there is drooling at the prospect. If the idiotic masses can't be educated as to why they should be furious about this, it's going to spread to every possible industry, and it won't be long until we'll all look around our rented apartments and realize we don't own anything in them.