Address Reuse for Multisig Address It is De facto standard that address should not be reused, and even Bitcoin officially emphasis address should not be reused. Does the same condition apply for Multi-signature address ?, If Yes apart from privacy what is the need ?
Thanks
It is De facto standard that address should not be reused.

Indeed.

and even Bitcoin officially emphasis address should not be reused.

There is nothing official, anywhere, in Bitcoin.

Does the same condition apply for Multi-signature address ?

Yes.

If Yes apart from privacy what is the need ?

Privacy - for you and those you interact with - is pretty much the only reason for discouraging reuse, multisig or not.