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Not evetyone has to use everything for warhammer
Fritz is apparently some big-wig 40K blogger. I'd never heard of him before yesterday either.
And Crownaxe makes a good point (wow my fingers are just NOT working right now...) many players use house-rules that help make the game more sensible to them, or they just forget. I feel it's usually forgetting to be honest.
Pretty much anyone who has ever googled anything warhammer 40k has heard fo fritz. I'm surprised you guys haven't.
I wouldn't call him a "big-wig", he's just a 40k player that blogs and has a lot of good/interesting tactic tips. Especially for newbies.
He's mainly known for his tactics with jetbike seer councils.
On that note: I've definitely heard him make some mistakes while narrating his videos and this is obviously one of them.