Perhaps cus the censors fear kids would imitate putting a bucket above a door & injure themselves/someone. I get called on alot of things like this with similar rationale ie I couldn't just put an (undersea) campfire out in the open I needed to go back and draw a safety ring of stones around it lol
Real talk: realizing they cut this bit from the episode and subsequently learning itβs because Nickelodeon thought it was too violent (it isnβt) was my first lived experience with censorship and it didnβt sit right with me then, either.