If you’re going to play a kid with special needs, great! It’s not the other teams job to cave to it.
It’s fine to play a special needs kids, it’s disrespectful to expect the other team to also stop trying and just sit there so you can score more.
I agree if you don’t want to be embarrassed, stop the other team. But the side opposite me would seem to suggest you aren’t allowed to stop the other team.