Saying "more content" gives no context, saying what you actually want to see will give the artist/dev ideas they may not have had initially. This could in turn save time in the brainstorming process. For all we know, some of the scenes I put could have been considered finished by the dev. I personally would much rather be smart and give specific ideas than be a fool and simply say "give more content" but well to each their own.
As for the "time" thing....don't cheapen the dev's passion by saying something as "working on in his spare time". I'm sure it wasn't your intention, but it makes the game sound as nothing more than some side project....and I've seen what happened to those. And while a year or so is understandable, a few years is unacceptable when you're making money per month. The west has sadly gotten use to being milked that they are starting to set the bar pretty low..... sorry, I just can't be that guy. Yup, that was a pun, no I'm not sorry for it.
If the goal of your comment was to give ideas to the dev, you're in the wrong place. The dev isn't active on this forum. No offence, but you're "being a fool" by trying to reach him here. You can go in the discord under #suggestions and give your own, but the dev isn't really short of people trying to get their ideas into the game. There's a lot of people doing that already.
Also, stating the facts isn't cheapening anything. I'm not questioning the dev's passion at all, but as of now, he does have a job and is working on this on the time he has outside of that. If you want to change that, feel free to support, and help him go full-time.
As for time expectations, at the current pace, it will take a few years for the game to be nearing a completed state, with a bunch of events and variations, and all gameplay elements. Just a realistic projection, whether you find it "acceptable" or not.