I'm very glad you like the game and that you're looking forward to it. There will be bundles that offer small discounts for buying multiple DLCs at a time.
To your other point, each DLC adds five Moments. Five Moments for $4 dollars is 80 cents for each of the Moments in the DLC. And if you've played the demo you know that every Moment has a huge script, dozens of choices, they give bonus alterations that will unlock in other events after you've been through the Moment, include special art, etc. Not everyone has money to spend on things like games. We understand that. You can play the version we're already releasing for free for everyone to enjoy in that case. No one has to have the DLCs to finish the game.
Though, since the base game is free, you could use the money you would've been able to put towards the base game to get the DLCs instead. This way rather than players spending $10-$15 on the base game (which would've been the price range for the game if it had a price point) and having no DLCs, people can spend $8 to still have the entire base game plus now two DLCs. Or not buy the DLCs at all and be able to fully play the game without paying anything.
I don't want to make you have a negative association with the game and have you be too uncomfortable to come back and play it by saying these things. I just want you to be more aware of what those prices really work out to be. We won't delete the comment 'cause it's not spam or harassment or something. You can still have this opinion.