Yeah whenever these SPA-slamming posts come up, I just try to imagine carpenters posting about why they switched to hammers from screwdrivers. They're just different tools that excel at solving different problems.
That is where the SPA slamming is coming from.
It's not that people fail to grasp the concept of different tools for different jobs.
I'd guess that only about 20% need to be an SPA and the rest is cargo culting