You also get U232 and a bunch of other actinides. Then you have to turn your reactor off because the void coefficient and delayed neutron fraction keep changing and you don’t want it to go prompt critical.

Then you have a bunch of gamma emitting salt there’s no clean or affordable chemical process for separating, and you leave it lying around for 50 years before finally burying it at huge expense.

You did get the benefit of pointing to your failed experiment every time someone points out that LWRs are unsustainable though, so that’s nice.

Maybe BN-800 will finally be run in breeding mode but not as an obvious shell game to make weapons grade plutonium now that it’s more than a year old and catching fire as often as every other sodium cooled reactor?