mwahahahaha ah

….Oh, Rudy trying to brazenly ignore his own sickness and weakness and ‘get better for the Festival’ to do something as taxing and dangerous as putting up the lights, seemingly just to be there to support his loved ones, and then ending up ‘falling down’ as a result….

Is in parallel to Flowery, who wants to maintain his Dark World even though it'll kill him soon enough for the sake of Asgore's happiness, who pretends to be stronger than he actually is through his ‘fake stats’ to do something as taxing and dangerous as trying to challenge the Knight to protect those he loves, and then end up in a… pretty bad state as a result.

It really is all Rudy-Flowery parallels all the way down.