[tedivm]

In theory Google could send the Do Not Track header to notify people they shouldn't track, but very few sites honor that (and Google Analytics certainly doesn't).

[sofixa]

Why should it, it doesn't "track" you, it only notes vague details and aggregates visitor statistics.

[orangecat]

And in practice it's just another bit of entropy to identify you.

[Dylan16807]

If everyone in incognito sends that, it's probably very close to 0 bits.