For starters, it's the only rotating format in tabletop Magic (in Arena, there's also Alchemy), and although it shows a spike in product output in 2021, it isnt as egregious as we've seen for other formats: Tabletop Standard has been waning, though
They are either a huge problem or fall quickly due to combat and a lack of blockers
And now it comes with Yuna and Tidus
Then there are rad counters, a new addition to the arsenal of people who like to use mill as a strategy
You can easily include cards in your deck that combo directly with Unctus, like Tidewater Minion
While a consistent design language has been inestimably important to the growth of the game, its harder to say what that means when you have Optimus Prime battling across the table with Tyranids, Daleks and the Nine Nazgul