This is one of the strengths of WOTC R&D, and I hope we see more updates and adjustments like this on other obsolete mechanics in the future!
As a brief mathematical aside (feel free to check my work, Quandrix nerds), here is a short comparison of non-generic/staple overlaps with the appropriate predecessor across each Secrets of Strixhaven Commander deck, not counting Sol Ring or Arcane Signet nor generic/staple lands: 7 cards from Silverquill Influence overlap with Silverquill Statement 10 cards in Witherbloom Pestilence to Witherbloom Witchcraft 10 cards in Prismari Artistry to Prismari Performance 5 cards in Lorehold Spirit to Lorehold Legacies 9 cards in Quandrix Unlimited to Quantum Quandrix Seeing the data laid out as such, it's hard to justify my vibes-based analysis as anything more than a poorly calibrated vibes antenna
Okay, youve learned to play and youve got a deck you like how do you find a game
Bonus sheet rarity Several MTG sets have contained a 'bonus sheet' of thematically appropriate reprint cards, which can be used in limited games but aren't considered part of the set for other purposes - they don't become part of the MTG Standard rotation if they're printed in a Standard-legal set
32 copies in the Top 8 that weekend, if I recall, and suddenly, a Standard jack-of-all-trades was born
I got your next brew here