Compared to what? It serves its niche quite well. It's not nuclear power's fault people wait until they should have built it twenty years ago.
The answer twenty years ago is not the same as the one today.
What’s the relevance?
The biggest issue is only hinted in the article:
> ‘There’s just enough sun [in January/this winter thus far] to make it work,’ says Olena Kondratiuk
Solar+batteries work well in summer months, but for winter months, solar has much lower output. This is why Russia is attacking thermal plants especially in winter.