No you nailed it. The meme is a poor metaphor because it implies that the system has ever been superman or that OP believes it to have been superman.

Or that capitalism only behaves like Homelander when times are tough.

For many people Capitalism has always treated them like Homelander. For many people they've never seen the Superman fascade.

So this meme reads as though the creator only recently learned some world history, or has some privilege in life but is becoming aware of reality for others.

You could also fix it by just having Homelander say "I'm you!"