Yeah, I'm pretty sure I read that the screen door effect were even less visible in the Sony Morpheus prototype, even though it had less resolution than the Crescent Bay prototype.

I think the general consensus is that it helps, but also other ticks help like the diamond shaped pixels in the HTC Vive.

Current resolution still not works well with viewing virtual screens e.g. movies, virtual desktops and text. I think this is much more important as it increases practicality of the device.