The Intex easy plan is based on a continued progression of known doses. If you use tabs in a floater, you've abandoned that.
Tabs can -- of course -- be used in Intex pools successfully. But you won't be on the easy plan; you'll be on the "you have to work it out yourself plan". There's nothing wrong with that. Many people will, after a successful season or two, have learned enough to work out their OWN plan.
But, unfortunately, what many new pool owners do is end up frustrated with green pools.