Is sanding Q2 plaster yourself an option?

We have now seen our Q2 plaster for the first time today. I was positively surprised. I didn’t know 100% what to expect. We just brushed the utility room with primer and painted it white. Let's see how it looks when it’s dry. If necessary, we’ll go over it again, but I can leave it like this.
Judging by how the plaster looks, I think I’ll just paint the hallway white as well, unless we get the whole house done by a professional.
The only spots that are a bit crumbly are very rare, and you can easily smooth them out with your finger. I’ll work on those without a machine; it can be done by hand. And patch up a few small holes here and there. But all in all, the wall is smooth enough for me as it is. Apparently, I just don’t have particularly high standards.
Anyway, you can definitely wallpaper over it without any problems. As long as you don’t use thin, paper-smooth wallpaper, that shouldn’t be an issue.
I’m attaching a picture (hallway).

Non-woven wallpaper should go on top of that; it then looks like a baby’s bottom

: Would you like to post a photo of the primed and painted wall?

: Do you want to post a photo of the primed and painted wall?

No, haha :P But I'll do it anyway. So no painters were lost on our end, and the wall is still obviously wet. In the second picture you can see where it is drying in some spots. When I come back tomorrow, I'll take another one when it's dry. It's only one coat. And we basically rolled the paint directly onto the primer without any waiting time; I don't know how smart that was. There was no waiting time mentioned on the can, so we just continued immediately.