This was great and I needed a laugh. Thank you

I would love to play this :)
Ayucea has a really cute design, the whole movie does actually.
And the bickering with the fully formed virus was really funny, the open ending was interesting as well.
Does the virus that wants to be normal have a name yet?

I definitely don't think that the length of the song is a flaw at all. That was very epic. I think it's super impressive when instrumental can evoke specific emotion. It was griping, and felt like a journey.
I relate to things never quite feeling finished, and that perfectionist nit pick mode. But I think you did the right thing with ripping the bandaid off, so to speak. I liked it a lot, and think it turned out great.

Very beautiful artwork! I really love the stylization.
The rating system has confused me too. I believe since nothing explicit is showing, you should be fine to lower it. I believe it says something like " if there's nudity in the thumbnail rate it A" . I think a good rule of thumb is if Tom or a moderater says it's an issue, then change it as they request. Otherwise I'd say your own best judgment. M would still prevent younger people from viewing it, while making it a bit more accessible to a general audience. I think your intention is a big factor too. Since it's also not intended to be sexualized, I think the change would be totally fine.

Communities and Fandoms can be intense. I'm sorry people are being so rude. To say you ruined their childhood is ridiculous. This is the internet, where everything exists. Rule 34 was it? So if they can like a show, dispite that being everywhere, a vent piece you made shouldn't be a big deal. They are choosing to make it one. I'd say that makes their words the real bullshit.

There are jerks and complainers in every group. But I bet there's more people who genuinely it than not. Jerks are typically just louder. The people who liked it will become fans, and those that claimed to hate it will forget why they were upset in a day.
It's easier said than done, but try not to let it get to you. Make what you like :)

I love the art style in the first. I think you did very well, and it came out beautifully.
The second is adorable and I like the perspective. I think you captured that cozy winter feeling very well. It's making me wish for snow :)