Yeah, that's classic false precision. 11,000 pounds has 2 significant figures, so if you convert, you can't pull all that extra precision out of your ass, you have to round to what the original measurement provided. Either 5000kg or 5 tonnes would be an acceptable conversion.
Of course Elmo probably has no idea how any of that works and isn't thinking past "metric = not murican = woke".
Americans insist on using exact conversions, which makes switching to metric harder because if you actually used metric. Honestly, at this point I'm convinced its an effort to keep metric "unintuitive" by teaching exact vs teaching it from a more native approach.
Ironically, my conservative schooling did better by comparing a gram to a fly, km to half a mile, etc.