Define problem, because it’s less waste than old solar panels per megawatt. Both of which we just throw away in special places designed specifically for that waste.
Define “less”. By volume? Mass? Ecological impact? If you want to say “per megawatt” then you obviously have numbers, let’s see them.
Uh, that wasn’t me, please pay attention. Either way, you made a claim - a quantitative claim no less - it’s on you to back it up. Don’t pretend that someone else’s behaviour excuses yours.
Nuclear waste is uncontroversially a serious problem. If you want to convince anybody of anything else you need to be willing to communicate, and this isn’t it.