mostly with conventional LWRs burning up our fuel rapidly
Well, yes, the obvious counter argument being that, you will never build more advanced reactors on scale (some are already available), or develop new fuel cycle if you stunt the evolution process and block the technology we already have.
Imagine saying to be favourable to installing solar panels but only when they will be 100% recyclable and with efficiency close to the theorical maximum
Well people also complain on expansion of agriculture land so I don’t think consideration on land usage will disappear.
Real problem is that many people want the energy source which is clean, cheap, invisible, safe, doesn’t consume any land or resources and of course has a easy to understand functioning. What could possibly go wrong ?