2019 has restored Tools > Customize Keyboard..., but it's quite weak compared to 2011's. First, there's no All Commands category. While there is a search, it only searches the selected category (and there's no way to select multiple categories), so you have to enter the search term then click through every category manually, which is kind of insane. Next, many, if not most of the commands have a description that's the same as the name of the command. Why bother? Finally, numerous commands are missing, even though the underlying functionality is still there. My most missed is Paste Values, but there are a lot of others.