The reason you're catching flac is cause at the bottom of those guidelines you put "Follow this and you'll spend the least amount of cash and yield the best results." Yield the best results? Using MG nutes? It's not that it can't be done, but if you're gonna call your advice great advice, and tell people they'll have great results...you should at least make sure it's true. MG is least noob-friendly fert there is, so since this is for noobs, I would NOT recommend MG lol.
The only thing that I strongly disagreed with was number 1. This has straight up lies in it. You have much to learn if you think all cannabis strains are the same, and the only differential is handling/curing/drying after harvest. Not only are there millions of strains, each with a unique THC percentage, but THERE IS strains that are shit to begin with. Not just that, commercial bud like schwag usually has great genetics. The reason schwag is schwag, is because the commercial growers don't separate the males, and every female becomes pollinated as soon as it's growing it's first pistils. Since every plant is hermi'd, the plant doesn't even come close to being half as potent as it could be, in a sensimilla crop. There is a decent amount lost in handling, but that's not even worth complaining about. You could take a White Widow, let it herm, and the bud wouldn't come close to a Durban Poison sensi crop.