I think your not understanding what they meant by beyond generations. Again look at iPhone software, there are apps that can run on multiple phones but cant on earlier models. Everything isnt going to be forward compatible, when it cant keep up its going to get dropped. If its refreshed every 4 years by the time year 8 comes along the first iteration will no longer be supported, so it wont hinder development of games.
Yep. I look forward to this new model , hell I'll take a three year refresh at $400/pop (relative) but 4 makes the most sense and will keep pushing the tech and games without leaving out people who are no more than 8 years removed from last hardware purchase in the loop.
Also like not having "new generation" where we have few next gen games and shit software until the devs have time or resources to leave the old gen behind to catch up. The people who are 8 years out can buy the 4 year old (last refresh) for cheap and stay in the ecosystem with a graphical bump and keep playing their games.
It's great imo