Who’s gonna judge all that? In terms of Fiverr sellers that means Fiverr would need staff to do so.
I don’t want my Fiverr fees going up to cover all the checking of everything that needs to be checked. This is where let the buyer beware comes in.
If we base everything on things like bomb detectors then of course the law should be involved in dealing with fakes and that’s where our taxes come in.
Whether someone gets the lotto numbers correct because someone on the internet said they would is not something I’m prepared to pay for through the increased fees necessary to check every delivery.
When I check supposed SEO work that a client has had done in the past I get paid for that and sometimes find that it wasn’t done or wasn’t effective. I tell the client to go to Fiverr support if it wasn’t what was promised. If it wasn’t effective but was what was promised I explain why to the client. All of my time is paid for though. This client will now beware of similar things in the future.