¹ https://www.computerhistory.org/revolution/input-output/14/3...
Sorry, but the Windows 95 user interface had the exact same discoverability issue.
That doesn't change the fact that neither interface gives you a way to know in advance which items have associated contextual menus.
At that point they could no longer use their computer at all until they got external help.
Personally I loved force touch and a few months on iOS 13 I’m still struggling with transition to long press gesture instead.
The problem with long press as an accelerator is that it’s triggered by a deliberate pause. It might just be a few hundred milliseconds but the perceived time is very frustrating.
A context menu is fine when it provides shortcuts to functionality also discoverable elsewhere. Windows 95’s context menus were full of functionality only available through them.