[simpss]

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

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

[jtbayly]

The article explains that the info can be transmitted by any JavaScript library.

[Godel_unicode]

Having spent a good amount of time looking at potential JavaScript malware that ended up being repackaged GTM, I'm pretty confident anyone who says they're "blocking Google Tag Manager" has their head in the sand.

[rhizome]

I've been blocking GTM forever, so I do wonder how this will play out.