"modern reactors are much better than old designs, but when we talk about shutdowns they complain that reactors which have been running much beyond there origin

"modern reactors are much better than old designs, but when we talk about shutdowns they complain that reactors which have been running much beyond there original design lifetime are being shut down" These two claims aren't contradictions though. It is both possible that nuclear tech has improved a lot, and that newer reactors would be better, but the alternative of "no reactors at all" is much worse than even running the existing ones beyond their design lifetime.