Certainly some fair criticisms but I think some are a little excessive or unrealistic.
I can understand this but you can actually adjust the pressure required in the Accessibility Settings. I've set mine to the lightest sensitivity and it now requires very little pressure, yet it's still quite easy to control.
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And the benefit us having pressure sensitive options means you still also have long press for other functionality.
Don't you think its a little unrealistic to expect it to be implemented across all applications less than one week after release? It doesn't offer universal functionality as not all apps have the same features and functions--that's the beauty of it, so it can't just be automatically part of all third party apps. Of course it's going to take some time. A majority of Apple apps do have it. I won't disagree that customization would improve it significantly but again, what brand new functionality or system wide features are initially released full baked? This criticism would be far more applicable a year from now but is a bit unfair at this point.
Don't disagree about it's use in previewing email messages--my assessment as well. But there are other times were it's great---previewing web links is something I find very useful, within emails, messages, when viewing webpages.
Agree with the former but the latter is already there---devs have access to the APIs, they just need to implement the functionality in their apps.
The back button on Android is great for sure. Apple needs to mandate the swipe left to go back across all apps. The introduction of the ability to return to the previous app is great but having to reach the top left corner to use it sucks. Deep 3DT to access the app switcher does help mitigate this problem though---did you happen to try it?