It does. You do have to install it (GrapheneOS provides a Play Store Sandbox to install google apps to) intentionally, it is not installed by default. Perhaps that tripped up the author of the misinformation you came across?

In any case, it is a fantastic OS with many of the annoyances of Android removed. (Scoped file permissions are fantastic, for example) If you are on the fence, I'd suggest giving it a shot. Replacing a phone OS might seem scary, but it is really pretty similar to use.