Because nuclear is pretty cool whereas renewables are less awesome. Think about it, the nuclear symbol ☢️ is much more interesting and cooler than the renewable ♻️ symbol. We all know this is what really matters.

Well now you're back to arguing about new construction instead of keeping existing plants running.

Also, we can build both. Surely you appreciate that there are other factors slowing the speed of the energy transition besides the availability of capital, and that while nuclear has its own roadblocks, many of them are different from + don't overlap or compete with those standing in the way of renewables.