I feel this way about interactions on mobile. I grew up using Android and still have my phone on 3 buttons mode because it seems obvious. Have been using iDevices for work and some of the tap and swipe gestures are so unintuitive, along with the flat text as buttons. It feels like Apple decided "people that use our devices know this already."
There’s an accessibility option to display buttons with an outline. I have enabled that for some relatives as they are also confused by the (lack of) design. All hail flat design, sigh.
