Where do you put all the waste you generated covering renewistan with all the equipment and infrastructure you had to build??? Is that not an environmental disaster??? The environmental impact of all nuclear would be an order of magnitude smaller.
In the very long term, humanity might face a problem with exposure of crustal rocks by mining operations. This causes reducing materials in the rocks to react with atmospheric oxygen, gradually depleting that oxygen. The long term solution to that will be to bury some reduced materials to compensate (the production of those materials released oxygen when oxides or CO2 were reduced). So, some level of sustained burial of waste material is not only acceptable, it's likely to be necessary.