The substantive difference is what, though? A lawyer has to charge another billable hour to hit your other 5 providers? To the kind of adversary you're worried about, those resources are nothing.
>A lawyer has to charge another billable hour to hit your other 5 providers?
Sure but first, they would have to actually find out who those providers are. Without a central service like Google tracking everything you do online, it would be extremely hard to link 5 different email accounts to one person and then to forum user MMARules22 who has been posting on an anti-GMO forum. Google also makes it easier for people to subpoena private information in a lawsuit and then leak potentially embarrassing items to the media.
