The fact that it is a fork of a fork has nothing to do with why they are delisting it.
Actually whatever fact investors and holders got loss. If this trend continues, I mean if follow others reputed exchanges then more investors will get loss. To be honest satoshi vision sound is not wise with any other coin. Whatever satoshi vision, its match with bitcoin in my opinions. Thanks God I was not holders, and really sorry for them who have lost their fund with BSV. Not sure how long it will take for recover. Who know it wouldn't recover anymore?
There would be always two paths,either it would recover or would completely die out.If this trend will really continue where the community do really reacts or do have that hate towards BSV
then exchangers that do list out will consider to delist it and for people who purchased it will really have a loss if they wont able to get out on the right time.