These decks you are seeing are basically just copying the decklist of the GP Liverpool winner (team modern): https://www.mtggoldfish.com/deck/1513981#onlineQuote from Joban8 »
On a similar note, it appears Open the Armory has gained some favorability again; a lot of those same lists that have D Command have OtA as a 2 of MB. OtA always looked so good on paper, but never really panned out in practice; aside from 1 of auras that one might want to tutor up depending on matchup (Spirit Link), OtA is almost always going to be used to fish for a Coronet. The problem with that is we need access to 3 white mana and 4 mana total in order to play both on the same turn. I think a case can be made for OtA in decks that play a lot of 1-of toolbox auras, but there's no benefit to be had by jamming it into a typical decklist IMO.
Mostly I think it just comes down to that the first 57 cards of the deck are a lot more important than the last 3. As long as you have the core of the deck the final few choices are only going to make a marginal difference and it's possible to win with worse variations of a deck. As this was a team event it's hard to know if he even won a lot. What we can see is that the the normal "5th removal spell", Dismember, was unavailable as one of his teammates was using it. In general I find Dromoka's Command fairly terrible as it's completely unreliable in the matchups where you need removal the most. You cannot guarantee that your creatures are larger, it doesn't exile and having to hold up 2 mana instead of 1 is also a huge downside. The flexibility of countering a bolt or killing an enchantment would only make it worth running in very specific metagames.
Open the Armory is awful in Bogles. The extra 2 mana to choose an enchantment from your deck make pretty much every choice terrible. If you want a slower powerful enchantment, which is pretty much what it is, you should be running Unflinching Courage instead. The best reasons to be running Open the Armory is probably the possibility of including Gelid Shackles and Wheel of Sun and Moon as fetch targets, but he's not even doing that so not sure why he's running it.