odd reasoning...but that tracks (that he does odd things)
on hold pending details supporting calculation that spam/fake accounts do indeed represent less than 5% of users
his reasoning is sound: the #1 thing you're acquiring when buying something like twitter is the user-base. the code can be rewritten, the infrastructure can be replaced - but users can't (RE: "if you're not paying for the product, you ARE the product" - and twitter is free, so...)
so if you were promised only 5% bad apples, and there is more than 5%, you're not getting what you were promised. also, getting bots and fake accounts off of twitter is one of elon's stated goals. he needs to know how big the problem is.