The reality is that, in spite of their legally-dubious status, theres no incentive for Konami to act on shutting down these unofficial competitors
You'll find five rares or mythic rares and tons of Booster Fun variants and traditional foils in every pack
The best you could ever hope to for here is infinite Treasure, and if thats your goal, I have a Dockside Extortionist to sell you
Yusei calling out Z-ONE for not caring about his friends, and Z-ONE reminding him that Aporia and Antinomy (as well as Paradox) were only Androids with their memories, but not the real ones, who had already died is very similar to Yami Bakura and Yami Yugi's discussion during the Memory Arc, where Yami Bakura reminds him that the characters in the game aren't the real people (who had, obviously, died several centuries prior to the begining of the series, only given form due to Yami's memories
Despite being Plane-locked to Kamigawa, and therefore only receiving new additions in a handful of expansions, the Samurai type has a solid base of creatures to work with
That means it's important to make sure that there are mechanics, strategies, and synergies that cross over the divide