I empathize with the author but client-side technologies like React have a pretty clear advantage that explains why they're popular: for the people that are tasked to make websites (i.e. us, HN readers), they're easier to work with and they save us time. It outweighs all the end-user-facing cons by a lot, because companies need us, and our salaries are expensive. It's true that they are largely more complex than O.G.…
You are contradicting yourself by opening with a claim of time savings and ease of use followed by admitting that the solution is largely more complex. More complex work does not save time in aggregate and is not easier to use.
I'd rather maintain a React app because it will be at least somewhat familiar than try to fight my way through someone's home-grown rendering framework that can't even be Googled.