The src/routes/posts/[slug]/+page.svelte thing is pretty recent, it used to be just src/routes/posts/[slug].svelte. I'm not exactly thrilled with the new naming...
I left the framework for this reason. When I asked about it, I was told "this is what Next will be doing soon". I need more reasoning than that, and it was indicative of the decision making process. Turned me off. Aside from that, Svelte is SUPER fast and easy to use. I may give it another go at some point.
I thought it was weird and couldn't see the reasoning, but personally I just persisted with using it and in the end I've found the new structure perfectly workable and perhaps even marginally prefer it. So yeh, it might seem stupid but maybe just try and use it more to find out if it's really that big of a problem for you. The rest of the gains I've had from SvelteKit were too good to pass up, it's overall just a superb dev experience.
