[Google Pixel XL Questions & Answers] G1A:
Easiest method found yet

This solution might not work for everybody, but it worked for me to completely eliminate the google instant apps security violation. I share with you what worked for me in the off chance it can make your life more pleasant too. :) It's not perfect, it has drawbacks, and it is the most effective method I know of. Here is my simple procedure. I can guarantee right now (Feb 2018) it will work for 100% success rate for anyone who tries it:

1. Set android phone to airplane mode.

2. Purchase a used iphone as a replacement. Keep android phone as an offline multitool or sell it for a few bucks.

3. Use iphone instead of android phone. No instant apps issues. Ever. (Antivirus is currently not available for iOS because it's apparently a closed system and all apps via the apple app store are vetted by apple before being available to users, so fewer apps available, but less drama)

In case of wear-and-tear issues with your used replacement device:

If iphone has any malfunctions repair it yourself with help of aftermarket guide such as ifixit.com - waning battery performance is soooo easy to fix! Did you know that you could replace the battery for less than $20? Ifixit is totally awesome about helping repair electronics! I've made 3 successful repairs now with spare parts, specialized tooling, and free instructions from them. As long as you read all the available info on their site for your specific repair and proceed carefully, very achievable. My hands are the least steady of anyone I have met. I probably should have gone into gynecology. :D I had zero issues with properly carrying out the delicate electronics repairs. If I can do it, you probably can too. Some of you had better read the instructions repeatedly and watch youtube videos too! Or wine and dine someone better with hand tools than you to do it for you.

My personal experience is that this method (replace with non-android device) is fast, effective, and impressively stress-free. Although I lose some functional apps, my pre-owned iphone is remarkably low-maintenance and naturally invasion-resistant. I got my 5c used on Amazon for $130 and it has been the best value for a smartphone purchase I have ever made, except of course when smartphones were new and a slide-out keyboard was available, until software updates made such beauties obsolete. Bring back the slide-out keyboards for those of us experts at fat-fingering!!

Seriously, fighting constantly with what is supposed to be your obedient slave is, in my opinion, totally retarded. We have much better things to be spending our lives on. My take on objectionable software being pushed onto android devices without option to disable is just don't use or purchase android devices any more. We have power of boycott. Use it. Exert your power. End the BS in your life so you can get back to enjoying living it! If enough of us boycott the same thing to the point of its maker losing massive market share, said maker will have no choice but to listen to what customers demand. We vote with our dollars. We make demands with our collective dollars. No business can survive for long without sufficient dollars voted for them. The voice of the customers is that we want our privacy. If people keep using and buying devices that do not respect that, without any effect on the dollar votes to the maker of those devices, then privacy will not be respected and instant apps will only be the beginning of something much more invasive. To prevent that, the best thing we can do is stand in unison in opposition in terms that the maker of instant apps can understand and has no choice but to respect: boycott. At present there exists no punishment for this course of action, but much for all to gain from it.