I guess you mean skeuomorphic, with heightened 3D presence caused by heavy use of light and shadow - roughly, the sort of effect you would get from a static rendering of a cheap 3D model in a Unity mobile game.
I agree with you, although I will say that the current version of the Noto Color Emoji font is (IMO) the best up-to-date color emoji, because it mostly eschews this fake realism that feels uncomfortable and disconcerting in other emoji fonts. I'd prefer hyper-stylized "blobs", but I think they deserve some credit for avoiding the worst of skeuomorphic design.
See for example the "realistic" 3D rendering of the hand on the Apple emoji for "thinking face", it's firmly in uncanny valley for me. [1] The Noto emojis remain fairly stylized without being hideous like the Microsoft emojis.
Google also deserves from credit for drastically improving the rendering of many of these emojis over time. This has happened quietly enough that I doubt most people have noticed. They brought back the more blob-like turtle [2], which really deserves to be compared to the horrible, awkward plastic children's toy that is the Apple rendering. Or take a look at how awful the gradients are on the Android 8-10 emoji [3] and compare to more recent versions. [4]
I think we will look back at awkward 3D renderings in many emoji styles as a mistake. They remind me quite a bit of the terrible DreamWorks animation style [5] of the early '00s.
[1] https://emojipedia.org/thinking-face/
[2] https://emojipedia.org/turtle/
[3] https://emojipedia.org/google/android-10.0/