Used to think messing with finished art was straight up disrespectful. Saw my nephew add googly eyes to my charcoal portrait last year and got lowkey pissed. But honestly that meme version of your landscape sounds like it slapped. Changed my whole view on letting people play with your work, sometimes they see the fun you missed. Kid might have unlocked a new style for you.
Read an article about how remix culture actually helps artists grow. @mia_hart90 is right about playfulness moving things forward, it's like collaborative editing. Letting others add to your work can open doors you didn't see.