HUM! Since April can't make a little decision like this, it only stands to reason that she can't make big decisions. That means that she's a silly child who doesn't know what's best for her and that John and Elly are right to whatever they want without worrying about an opinion she doesn't really have.
The problem is that Lynn and her fanbase ignore possibilities that don't make a defiant, hypocritical idiot out of April. First off, they ignore the very real possibility that she's subconsciously afraid of deciding things on her own. You can't live in a house wherein a simple statement that you're very sorry about missing dinner but homework comes first turns into Elly bellowing like an idiot and John threatening violence unless you apologize for having free will NOW without developing a sort of protective submissive attitude. They also ignore the very real fact that even if Elly doesn't blow a gasket or John doesn't grumble about attitudes, the two of them will overrule her because they're afraid of her. In the first instance, they had it in their stupid heads that if April knew about their vacation plans, she'd somehow whine her way into making their trip up North go away while during the Housening, the clear subcontext seemed to be that ignorant, selfish April was so fixated on having a room she wouldn't get to enjoy much longer anyway that she didn't see the dire consequences of not being treated like furniture.
This leads me to a third problem I have with how they treat April. The same people who are terrified of her learning things that scare them have the annoying habit of expecting her to be an ignorant idiot that they have to explain what strokes are only to turn around and expect her to know that Mike simply cannot afford to buy and maintain a house. Why it is that they need to be safe from her knowing what's going on around her is something I'll touch on more fully later. Suffice to say for the here and now that their expecting her to know something that they keep from her when it's convenient makes hectoring her for being stupid a rather irritating thing.
Finally, the same sort of idiots who were clearly disappointed that John didn't haul off and belt April for 'defiance' tend not to want to see that the only reason that April is being singled out for being a waffling idiot in a strip peopled with prevaricatiing clods is that they've been ordered to. The amusing thing about watching her being yapped at for being clueless for not knowing what she wanted for lunch is that most of why her life sucked is because her allegedly adult siblings couldn't make up their minds about what to do.