Awful OS update. Awful. Actually considering Android now, and that's coming from an Apple fanboy.
Maps, Siri, Photos, copy/paste - don't care for any of it. Where's the dark mode, the customisable control centre, the ability to customise the home screen etc?
I see you love jumping to conclusions without thinking or even giving a chance. Customizable home screen will never exist, especially not with a "widget center" as I like to call it, in the far left panel on the home screen. I for one don't won't widgets in-between apps because in iOS and Android it looks like a mess, and I really don't care to put icons wherever I want because then it would look even more messy and unorganized. Right now my home screen is as organized as it's ever been and having widgets is great, but having them out of the way in its own panel is ten times better.
A customizable control center isn't really something I care about. When I was jailbroken in the past with tweaks to do so, I literally never used the toggles and app shortcuts. Since I own this device, it's organized, and I know where everything is, app shortcuts in control center is really something I overlook. As for toggles, I use all the default ones, so I don't care. You also have to note that there isn't really anything else to put in the control center, so who cares.
Dark mode is something I wouldn't really use unless my eyes are really really stressed, I had Eclipse a while back, never used it so... Night shift already does a fantastic job at relieving stress on my eyes at light.
I just can't believe that you really freaked out over something that you probably haven't even used yet. I've used it for two days now and I can't go back to 9 because 10 is so nice to use. When I was on 9 I always ignored it and used another device I have on 6, because the experience on 6 was better and the speed was better. Now 10 is faster than 6 with certain things, and for me and the experience has vastly improved to make me use it more and enjoy it. I'm my eyes Apple nailed it, and I'm not the only one that believes that too.