Also one of the things not listed here is the added complexity of an SPA, the routing bugs, the old browsers bugs, the added complexity of splitting js files so

Also one of the things not listed here is the added complexity of an SPA, the routing bugs, the old browsers bugs, the added complexity of splitting js files so the initial load does not become too big, the data storage... I'm currently maintaining alone two large websites and only one of them is an SPA, that's definitely the harder one to maintain by far.