As quoted from Lee himself:
I understand that some Windows users are getting more and more frustrated, wondering if the release of Scrivener 3 for Windows is ever going to happen! I get it. Two months ago, similar frustrations and questions were thumping around inside my head. Heck, if I were a Scrivener Windows user without the perspective and insight I have, I'd be mulling over some verbal eggs to lob across the fence in frustration right now too. We initially slated “some time in 2018” for release, but later revised that to “by the end of Q2 2019”, and we're not going to make that either.
And here is it they missed the Q3 2019 date as well.
Lee also wrote:
We want as much parity between Scrivener Mac and Windows as possible. The meeting point was version 3, but since then Mac Scrivener has already had six releases!
That's coming from Lee himself as to the differences. I wasn't pulling that out of the air. In fact, I had only noted 3 updates, but according to Lee in July 2019 there were 6. I can't say (don't want to bother to check) if there has been more than 6 as of today. That would be a mute point at this time.
So, while mac users jump all over win users for expressing their frustrations, while they sit there with the latest and greatest upgrades and support, they need to take a good long look at why they want to chime in at all. Is it just to troll the windows users? Just to put down those frustrated customers? Why are they even on the windows board when they don't even have the windows version other then to troll? Take a good long look in that mirror and remember for every finger you point at the windows users, there are 4 pointing back at you. Ask yourself just why you are here and why you find a reason to chime in when you have no invested interest in being here or in the version of the product itself.