It's a long story but renewables are coming on strong, storage is also coming on stronger but there are questions about how reliable you can get the grid with them at reasonable cost, nuclear can be part of the problem but has awful economics with current LWRs, I'm skeptical that small LWRs will really be better though GE is making a stab at it with BWRX, Gen 4 reactors might be better but they're 15-20 years out from serious commercialization.

Certainly "no nukes" and "red tape" are not the main thing holding us back, nobody in the west wants to put up $10B to build a reactor, really spend $20-$30B and wait 10-20 years for it to come online. Maybe red tape and opposition are responsible for 20% of the delay but good old fashioned bungling seems part of it and if you want to say "next time will be better" the burden is on you is to convince the money people.