I think personally that you are the one who is failing to take context into account.
The OP posted originally in an Adjustment of Status subforum. The procedures discussed there are mainly concerning USCIS, as USCIS processes adjustment of status.
And therefore, when an Affidavit of Support is mentioned there, the natural presumption is that it would be handled by USCIS.
OP then mentioned also "Visa", "Family Visa", and "Visa Denial". Firstly, a fiancé(e) visa is not a family visa.
Secondly, when you are adjusting status from K-1, your visa has already been approved and used. So how can someone be afraid to have their visa denied during Adjustment of Status?
Naturally, at the time, the question thus was: is OP accidentally posting about a Visa process in a subforum about Adjustment of Status OR are they using wrong terms and and are actually in Adjustment of Status?
Hence my trying to pinpoint where the confusion stems from. Because there is no point in helping without clarity.
Now the posts have been merged. However, both posts were actually in the wrong subforum still, as the post is not regarding an IR-1 / CR-1 spousal visa.