Yes, I don't think people realise the scale of production involved. We're currently producing about 8500 TWh of power with renewables annually (nuclear is about 2600 TWh), and adding about 585 TWh of renewables per year (this is steadily increasing). A typical nuke plant generates about 8.5 TWh annually, so we would need to be building 68 new nukes every year to keep up with renewables (at current renewable numbers). The cost and construction time is massively prohibitive for nuclear, uranium mining is pretty dirty and there's some downsides of nuclear waste at present. Yes, there's some emerging tech but we won't be building many of those for some time to come.

It seems unlikely nukes are a practical path to any significant contribution to new generation required and they will continue to fall behind. They can help but they're not the magic bullet many people seem to think. Solar, wind and hydro will dominate in the medium term. I think they will ultimately make way for geothermal to dominate, maybe via plasma deep drilling like Quaise or PLASMABit utilise to potentially make bores up to 20 km deep, which opens much of the world up to being suitable.

Fusion may become practical in the next 20 years or so, but that will also be ludicrously expensive, so also unlikely to make a meaningful contribution in the medium term either.