That seems to be the only big plus with NextJS and SSR. But a big reason behind that was how Vercel made NextJS accessible to so many newbie devs right during Covid season. I was one of those new learners picking up React through it. Out of all the frameworks, Next was the most well-documented and more straightforward. The extras such as the straightforward routing and the availability of templates by vercel made things all the more easier for many to pick up. Meanwhile React was languishing and most of the other alternatives were just all over the place.

That being said, I'm waiting in the back stage, like many other folks, for tanstack to get production-ready, because of the all the weird crap being pulled by Vercel on NextJS.