macOS 26 Tahoe's Dead Canary Utility App Icons

Personally, I'm more dismayed by this change:

> Apps that haven’t been updated with Tahoe-compliant everything-fits-in-a-squircle icons are put in “squircle jail” — their non-Tahoe-compliant icons are shrunk and placed atop a drab gray Tahoe squircle background, to force them into squircle compliance.

I've been replacing some app icons with their older, non-square versions for years (Firefox is probably my favorite). Will be disappointing to lose that option -- I've never understood why Apple feels the need to standardize app icons like this.

I'd like someone running macOS 26 to weigh in here, but I'm not sure it's true that - if you replace an app icon (presumably by pasting in the Finder Get Info window) - the replacement is also confined to squircle jail?