The real flip side of your question is: do you think you'd still be you as a "brain in a vat" without any body?

Ultimately this whole discussion boils down to challenging the definition of "you" or "I". Biologically every "singular" person is the result of many living things working together, so the concept of "I" is an illusion. Physically, there is no "I", but only "us".

This makes the discussion easier. If the hand is removed, then of course "we" are different because "we" lost a piece of "us". This would also be true if "our" brain was removed.

Nevertheless, there have been cases of brain dead people's body adapting to the lack of central nervous system, so the body is more independently alive than we tend to give it credit.

that's kinda a pointless question because we can't verify?? you have a brain when ur born but obvs it's a different kind of brain when ur old. the brain changes too so what is the "me" here? like my brain is different already from when i started writing this.