well... he said unity. but I don't think unreal would be bad at all. it can be customized at least as much as unity can
its a lot harder to work with though with like 20 panels on the screen at once
like animation alone has 4 tabs and each tab has like 5 or six sub windows and everything does something different but related
eg one is just to set up the skeleton another is to set up the animations and how they link together another is to link animations to code either through blueprints or actual written code and the other idr
and clicking the edit animations/model pops up another window with two or three tabs each with 3-4 panels rip
keep in mind this is a separate window from the main window, which has like 12 other options that's not player animations/setup, each of which i bet has its own window with a bunch of tabs
dont get me wrong unreal isn't too hard for use, but its definitely not something to jump in without prior experience with 3d game engines