Didn't you see my comment? Sometimes, I don't get a notification when someone replies to me, so it may've happened to you. I asked you why updates are hard to make. There are people playing the game, right now, on youtube, showcasing horrible game-breaking bugs. So, I asked you why it is that updates are "so cumbersome," as you called them. Not all changes would be save-game compatible, sure, but an amount of the bug fixing should be, and it'd be easy to test for that. From what I know of RPG Maker MV and itch, I can't see how it would be cumbersome.
It's no good releasing the game in an unfinished state, then saying you're working hard to finish it after releasing it. People are very sick of early-access games these days, and Steam reviews tend to be cynical. A lot of developers promise to finish/fix their games, and never get around to it, so it will read as BS to the Steam community. Since you said you don't know anything about Steam ("I didn't know Steam was such a big deal"), I figured I should tell you.
To repeat myself, bug fixes should be launched as soon as possible, both so that people get a good impression of the game and its development, and so that you can see if new bugs are introduced. It also lets you turn your attention to other bugs that crop up.