Surely washing it out not fixing the problem means it's not dirt/debris?
If I turn my crown a few times, it fixes the problem temporarily. Is that a fix?
To answer your question seriously: no. If the stick is being caused by a degradation of the o-ring, where superficial layers of the rubber/polymer are wearing down from use and becoming sticky, then washing it is only a temporary fix (as many have reported) where you wash away those superficial sticky layers, only to have them return after more wear.
Why don't I think it is dust/debris? Because if it were dust/debris, you would get a much more sporadic sticking problem that recurs after the initial turn of the wheel.
I'm not sure why people refuse to analyze the problem logically. If a small piece of dirt got into your crown, you would get a much different pattern of stickiness: not just one that happens initially when you begin to turn the crown, and which goes away after 1/3-1/2 a turn and doesn't come back for several hours.
What my pattern suggests is that it starts to stick after some time of non-use, where components are non-mobile and in contact with each other. Where some type of adhesive is given time to adhere to two different components. Which is why I asked my question: for those suffering from the problem, what is the problem like?
Instead of answering it or thinking about it at all, they've parroted back Apple's quick patch: wash your watch.
I suppose this type of stickiness would also indicate something sticky like coke spilling into the crown's crevices, but I haven't spilled anything in there.
Of several Apple Watches I have owned, this is the only one that has done this. The only unusual thing I did the day before this happened was spend an hour or two outside with the watch in hot weather, in the bright sunshine. Again, this supports the degradation of rubber components theory.
I also own a pair of sunglasses, which have rubber ear pieces. Normally, they feel smooth to the touch, and almost like hard plastic. However, one day I left them in my glove compartment on a 90+ day in the CA sun, and when I took them inside, they were really sticky like the heat had degraded them.
And to answer the question of: "Well why don't you just wash your watch and see." I am in the return period for the watch, and I can just buy another one (hopefully without the problem like the other apple watches I have owned). If I wash it, and it fixes it temporarily (only for it to come back later) then I will be stuck with the watch, and either washing it all the time or trying to get an exchange through Apple.
To bring up the sunrise/sunset problem, and Apple's recommended fix: unpair, and repair your watch...some people have actually spent the time thinking through the problem, or actually trying out different solutions rather than repair their watch. One person came up with a solution that helped me greatly, as I was able to fix my sunrise/sunset problem without repairing (which saves a lot of time). The ultimate problem is in the code, but that will take Apple a much longer time to sort through.
If people are complacent with ineffective patches that do not target the root cause, those problems will never be fixed correctly.