As someone who used to be way too critic towards new WSJ manga, I have to agree. For example two years ago, when Jujutsu Kaisen was still fairly new, I was incredibly nitpicky when criticizing the first three chapters. I criticized every little detail I could find, failing to realize that most of those details don't matter to new readers. This was at the time when we still only had access to the first three translated chapters. I ended up dropping the manga.
A few months later I took a peek at chapter 15 and it actually looked very interesting. I planned on reading it again at some point, but never got to it until last week. And I have to say the first three chapters I heavily criticized back were actually fine. The series overall so far up to where I am right now (chapter 33) is a well written battle shounen. But it still takes a few chapters time early on until you can see that.
So I think in general, the big picture of a WSJ manga matters a lot more early on than small details. A series captures an audience because of things like an interesting premise, good comedy combined with either good art or art that is great at telling the story the author wants to tell. Most readers usually aren't nitpicky early into the series, because they don't know it yet. Rather than looking at some small details, they are looking for something that hooks them into the series.
I think this is especially what TPGW does very well. It has a really interesting premise that hooks you in. While personally, I found it a little weird how Aino accepted so fast that someone else came up with the same story, that's her character. And most readers probably aren't going to criticize small details of a character early on as long as there's an interesting premise and good art. I think it's best to wait until we can see the direction the manga takes before criticizing small details like this. At least I could appreciate the premise of Jujutsu Kaisen a lot more when I knew that it would get interesting.