I would agree with that take. While what we have at Lumen is maybe 50% of what it used to be, it's still better than many stadiums across the country. National media and many opposing players still consider this THE most loudest place to play in the NFL to this day, but that may be more of reputation and history than current reality.
And there have always been a decent share of opposing team fans on gameday, yes, even during the heyday years. The difference now is instead of 10,000 opposing fans there might be 20,000. That's still nearly 50K more Seahawks fans than opposing team fans so to me it's moot.