Google Tag Manager, the new anti-adblock weapon (2020)

Anything that can be reliably identified across multiple websites can be blocked.

So here we'd just block "tag manager web container" no?

So long as we're on the topic of fighting ad targeting... if you've never heard of uBlock Origin, you should get it. It's probably the reason YouTube still thinks I'm Hispanic.

I love my poorly targeted ads. Easier to ignore.

I am not sure OP has the proper background to discuss blocking ad+tracking techniques. Such utilities do a lot more than blocking domains. Blocking domains is just first step as it's the simplest and cheapest win. Signatures/Content inspection being sent can go a long way and can accurately identify patterns.

Citing adblock feels like clickbait. Google Tag Manager can't run ads so I don't follow the comparison. Marketing analytics could always side-step anti-adblocking tools through server-side tracking.

As someone who has spent a lot of time on both sides of this, I think this is a great outcome, personally.

The most annoying part of ad-tech for me, as a user, was the fact that I was running all sorts of random javascript, any bit of which could blow up performance on my browser.

As someone who used to lead an e-commerce operation, I hated running all of this crap in my users' browsers because I knew it would get blocked randomly or cause hard-to-diagnose errors.

I eventually moved us to basically this approach using a home-grown solution and everyone was happier. It was even more robust because it just used session/cookie data and didn't require running any javascript execution to work.