No it is not well documented or discussed. The Kahr version is a permanent fix for what it addresses.

Other parts of the pin can still break.

And the OP used a knock-off version anyway, no telling what that one does or how.

You're not alone when you misunderstand what the Kahr board does. Go to Kahr's website: https://www.kahr.us/daughterboard.html
"This circuit creates a unique 5 volt power source for the MPU board."

It is IMPOSSIBLE for failing circuitry on the original 5v source to cause resets with a Kahr board installed because that circuit is no longer used for that purpose. The board performs ONE function. It permanently solves that specific problem.

I disagree that your board needs service just because it's resetting. The original design frequently failed in that specific way, causing resets. Yes, rebuilding it back to the original specifications will solve the immediate problem but you're still stuck with the problematic original circuitry. If your game will run X number of hours before needing that service then the game will run X number of hours PLUS Y number of hours with a Kahr board installed. It solves that one specific problem.

The other things that use the original 5v source are more tolerant of low 5v so you can go longer between service and as a bonus you can go even longer since the Kahr has shifted some of the load away from the problematic circuit.

I'm with you Mad_Dog_Coin_Op that it shifts the load and that's not without consequences. I still argue the system can go longer between service with the Kahr than without.

You keep claiming this because you don’t understand the purpose of the board. As I pointed out above, it solves ONE problem and does so permanently.

You keep coming back to ‘other problems can happen too’. Yes, other problems happen to pins. The original issue (low 5v on original circuitry) has been permanently remedied.

You didn’t design it, you copied the design from rkahr