No, not replaced. I don't think that's even possible to replace the playstore when Gapps are installed.
My long-term goal is to have an Android smartphone that is completely free from Google.
And that's why I'm trying different things. You have to try a lot of things, because there are very few people on the internet with a deep knowledge. That's why I have to make my own experiences.
Most of all I would like to switch to /e/ foundation. But the latest version for Oneplus 5 is based on Android 7.
The only thing that keeps me from completely abandoning Google is the missing support for push messages without Google's Firebase Cloud Messaging (FCM). I hope there will be an open source solution soon:
https://bubu1.eu/openpush/
Topic: After testing crdroid for a longer time now, I noticed a few things: Wifi sometimes loses the connection and basically the range doesn't seem to be as good as with Stock. And sometimes I have to press the power button two or three times to wake up the device. Also, some pre-installed apps are really completely useless, e.g. the voice recorder doesn't work at all. And the pre-installed browser is also very strange. But I don't want to complain, there are enough alternatives in F-Droid.
All in all I think that this Rom is well suited for daily use.