It is harder to do more with less. There is a reason React and other is used so much. Makes it easier to make interactive websites. It’s like asking why backend engineers think it’s harder to code an api using C instead of using Django.
> There is a reason React and other is used so much.
Yes, it's because many people are quite bad at their jobs and reach for the same tool regardless of whether it's the right one. Let's not make excuses for incompetence.
I used to think that was true but I now think it’s only true for very interaction-heavy apps: if you have hundreds of interactions on a page over many minutes, using an SPA is amortized across a lot of time, but if it’s something you could do with e.g. a simple Django app you’ll not only be done faster but will spend an order of magnitude less time on maintenance and accessibility work.