Correct. The MC still hasn't been introduced to the main 6 characters and so dialogue options are mostly for story flair (which will continue to be a part of the game; I like giving options even if it's not story-critical). The next public build will go up through Chapter 4 where you'll have met all characters and 'love points' behind the scenes will start impacting options for each character.
Can I say maybe? As it's a work in progress there will undoubtedly be elements I rework over time. Meaningful choices I plan to call out pretty obviously but subtle ones (at least in my current thought process) I'd rather be discovered. As an example, where you get stabbed in Chapter 1 will vary some options later on (one being partially sexah') but won't affect any route meaningfully.