App Adverts cloned, will app-ads.txt help and how?

Question

I suspect from a recent nonsensical review, that the adverts for my mobile game have been cloned and are pointing at somebody's advert machine:

suspect review:

In short, the criticism cannot relate to my game

It might be a random malicious review but not sure why anybody would bother. It's not targeted or it would be a compatible criticism of the game.

In any case, I have taken Admob advice and added app-ads.txt to my website

This will presumably stop Admob from providing any fake adverts with my images

Seems like a drop in the ocean, those fake adverts could be anywhere

I have also tried reverse image searching with Google Lens and TinEye with no results. There is a website apktools with fake links but that seems like another matter (the links do not download anything)

So my questions are:

Am I missing something about the power of app-ads.txt - is app-ads.txt searched by other ad networks and they won't show the material if they find the .txt without their name? Does this link in with Google Ads (I use Google Ads to advertise the game) Does Google take any action against people they identify as cloning ads?

And my main question:

Is there anything else I can do to stop cloned adverts?