That waste argument is repeated over and over again and just not relevant. Even if the waste problem is as massive as politics tries to claim (it isn't), that's not relevant for keeping the reactors running or even building new ones.
The absolute volume of waste produced is so low that keeping on relying on fission isn't changing the already existing waste problem in any meaningful way especially when considering breeding type reactors that can recycle existing "waste".
The argument is nothing but anti-fission propaganda and I wish it would stop being brought up as the first line of defense all the time.