I second this, in its entirety. In my opinion, the old "best move" arrow was great, while the new things like "now you're forking pieces" are pretty much useless. And I would like to be able to switch back. Thanks.
Game Review - settings?

Oooooh, I forgot about having commented here, and in the meantime I found a way to do it (at least on desktop; I don't know about mobile):
When you're in a game review, click on the "settings" button (the one near the top of the board). That pops open a window with a few tabs; select "Interface". One of the settings on that tab is "Show arrows"; one of the options for it is "Best move".
It used to show me the "best move" in green in addition to my actual move (which I find helpful because it was usually not the "best move") but now it shows me yellow arrows about where pieces can go next (which I do not find helpful). Is there a way to switch it back? Thanks!