So does anybody remember when Konami tried to hype up the Sea Monster of Theseus, then nothing happened. They said it was going to be "one of the strongest monsters that will be released in 2017 has no effect" (https://yugiohblog.k...rticles/?p=8084), but never followed up with anything and a lot of us had a good laugh over how it turned out. Well I think I know why they did that, and I also think it could've been, and this WILL sound crazy; I think Konami wanted to make a "Theseus" Archetype (https://en.wikipedia.org/wiki/Theseus). My basis for this is this card's name, Sea Monster of "THESEUS", as in Greek mythology Theseus was a warrior sent to out to complete six "labors" (meaning he had to kill some stuff like in a God of War game). This card is based on the sea monster near Megara, Italy where a robber would push travelers off a cliff so that the sea monster could eat them when they fell, then Theseus did that to the robber. Considering I'm talking about the "six labors" of Theseus and this card is Fusion Monster that is also Tuner support (and the only reason Konami would support Tuners is if they wanted to make more Synchro Monsters), I think that Konami might have been trying a Synchro-focused Archetype that would've included other Summoning mechanics based on spamming Synchro Monsters or helping them out in some way, and it may have looked similar to the Burning Abyss but again a focus on Synchro Monsters. What I think happened is during the design process that Konami in the TCG they were given a heads up from Konami in Japan probably telling them about Link Monsters and more importantly, Master Rule 4 and that might have complicated things too much for them and then they decided to give up and move on. This makes sense to me at least as this card was released in Raging Tempest, then after that it was Maximum Crisis which is the last main series booster before VRAINS, and I assume that it takes Konami a few months (or even a year in the case of an actual Summoning mechanic) to design cards or even change rules of the game so it could be very possible that Konami in the TCG was told about Link Monsters months before they were leaked so they would have time to prepare and design their exclusive cards accordingly.
I have no actual evidence to back up what I'm saying, and I am not saying this is even factual just a theory (a game theory *wink wink*), but I do think this is a case where Konami in the TCG wanted to do something but Konami in Japan had other plans, and of course Konami in Japan gets the last say no matter what, then we were given an unintentional joke card.