Perhaps because it's boring. Solar is basically the same tech as it was in the 70s. The only major difference is that it is literally more than a million times cheaper.
It's cheaper to install and operate solar than it is just to operate a coal plant.
Sure there are challenges with wind and solar, but that's all they are: challenges, not showstoppers. When something has such a compelling cost advantage, there is lots of margin to throw at the challenges.
It'll be difficult to power a grid with 100% wind and solar so that's all you hear. But on the flip side, it'd be quite straightforward to power the grid using 90% renewables using the existing plants for the last hard 10%. It'd be both cheaper & cleaner! Why the heck aren't we celebrating that? Add short term storage and it'll be 99%.
And this isn't theoretical or anything. We are doing it. We're currently installing solar & wind at about 5% a year, and that 5% is increasing by about 50% annually.
There is way more good news than bad news about solar. But good news is boring and bad news gets clicks, so you only see the bad news.