It matters because creating a fake account gives the impression that two people have the same issue (& want to take the same approach to raising it), rather than one.
That may not seem significant but since only 5% of Monzo users are active members of the community, I assume that if one user raises something, there’s probably another 19 who would have too, if they were here.
Anyway, I’m not sure why I’m explaining that because you know why you created the 2nd account already! The timing of the last couple of posts makes it obvious that, that’s what you’ve done here.
I’ll leave this question for someone who’s more interested in discussing that topic.