The gist is that, for animation, frame interpolation messes with intended timing and can produce incoherent images on interpolated frames and odd frame rate issues for certain kinds of animations. Interpolation can thus cause animations to lose their punch and feel wrong.
While interpolation may be nice for live action films, it should still be an option to turn off.
If you are using the app, I believe you can get rid of this under settings > username > enable home feed recommendations. Turning it off makes the app way more usable.
To supplement the other response, [T] declares a generic type, so [T] is a public method with the generic type T. I'd agree though that the is initially hard to parse, especially when taking C and C++ into account, where * means something entirely different.