There are many things you do not like about The complete gestural navigation of Android Q option, but because the explanations of why it is bad are better in video form than written, I present this video unnecessarily long of my complaint.
In this video, we compare the complete gesture navigation in Android Q Beta 5 with the 2-button Pie setup, which is more a combination of gesture buttons. I'm talking about why back-side gestures are a disaster and oppose so many Android, not just sliding menus. I also point out some of the unnecessary changes that are making more work in these new gestures, where minor tweaks to the 2-button configuration would have given us more complete gestures that make a lot more sense.
Again, this video is probably as well long, but I cover everything.
Google, you can do better than that.