Que is: Has Good filled this loop hole or still SEOs are in lead?? Obviously, SEO hosting is to trick Google. No??
The whole purpose behind SEO hosting was to have your sites on different C-class IP's. I still believe it's good to have your websites hosted on different C-Class IP's, especially if they're linking to each other in any way.. I'm not positive how Google feels about this though!
Good SEO strategy shouldn't aim to get around "loop holes" per se, but to understand search engine algorithms and maximize visibility based on these. SEO Hosting is one of the easiest ways to do that. With a Multiple IP Hosting account, you get a number of unique Class C IP addresses. You can use these IPs to create micro-websites that provide content relevant links to your targeted website.
Seo hosting is only a marketing trick. You cant get better results if you host your sites with different ips. If someone still thinks that it will work, go with cloudflare and you get different ip for every site.
I personally know people who still build PBN (and still working) even though Google had a huge crack down on it recently. No sure if they are using SEO hosting though. Spreading the hosting in the first place seems to be a better bet than using one company. I have personally never used SEO hosting so can only comment from observations.