Is Single Page Application suitable for blogging? [closed]

As you said SPA's are a real pain for SEO there are ways around it but they take some setup. The benefit is that you don't have to reload the page but in a blog you generally spend a long time on a page and one of the big reasons for having one is SEO. So unless you are a huge blogging company it probably isn't worth the benefit.

I have seen several sites which do some cool stuff with blogs which are SPA'ish'. For example, right now LinkedIn pulse loads a post and as you scroll down it loads a new post at the bottom and changes the url. See: https://www.linkedin.com/pulse/how-ace-top-50-interview-questions-dr-travis-bradberry

As for the WP approach I have looked at using the WP REST API but we found as we looked through it that you probably would only want to use it for displaying the blog and stick with the full WP admin area for editing the blog. The main reason being that by the time you take away the admin side you don't really get much from WP and you might as well use something less complex. This might be what you are saying anyway but just wanted to be clear. I would still only do this if you don't like theming WP but WP isn't bad to theme around and you can find plenty of people who know how theme it.