Credible Wireshark log dumps would be a good start.
I'm sorry, but if you expect anyone to believe you, you're going to have to produce actual evidence.
Note that you can also do this in Chrome: Settings/Site settings/JavaScript.
If you're looking for another way to block ads on mobile, DNS66 works pretty well for me, and it's FOSS IIRC (obviously it doesn't get everything, there's only so much a DNS-based blocker can do, but it catches most ads except YouTube's in my experience).
I do use DNS blocking on my home PC, and yes, it works great, but obviously that is a moving target, especially if you don't actively maintain it.
I'm not familiar with DNS66 - I'll give it a closer look later tonight.
The top result: http://ccm.net/faq/39964-google-chrome-for-android-turn-off-...
I mean, just look at the current state of advertising on mobile. One constantly gets ads hijacking the browser to show ads ostensibly from Amazon or Walmart (I doubt either Amazon or Walmart would actually prevent you from getting to the content you're looking at). The "well-done" ads prevent you from even hitting the back-button on your browser to return to the content. Being an Android user, I've effectively taken to using MS Edge on Android, because at least in Edge, I can disable javascript, which has gone a long way to crippling such ads. (Before anyone asks: I'm normally a Chrome user + UBlock, etc etc, but Chrome doesn't support extensions on Android, and I've never had good luck with FireFox for anything other than draining battery).
When Ad companies learn to play nice and not hijack my browser and occasionally serve up out right malware, maybe, just MAYBE, will I reconsider playing nice with them.