I agree. I use an Apple ANSI Magic Keyboard, MacBook Pro with Swedish layout, and a Keyboardio Atreus on a regular basis, and I can switch between them without trouble.
There’s definitely a bit of an adjustment period when I (re)introduce a keyboard into the rotation, but I can get back to proficiency within a day or two, and then I don’t notice it at all.
You'll always have your favorite physical layout but muscle memory can also adapt. The same way I don't ride my mountain bikes the same way I ride my road bikes I am naturally and unconsciously adapting to the different keyboards based on how they feel to my hands.