Time and units are toggled from the 3 dot menu. https://i.imgur.com/Vi6tvGW.png

Init time makes sense to me, it's when the forecast/model is initialized, letting you look back in the past to watch the change to the present and future.

The sidebar thing is weird, but it also can expand out.

I think you’re the wrong audience. The first 3 points are just meteorology standards.

Time being UTC and init times are both meteorological standards, so I'm not sure why those are problems.

The legend and map colors seem strange, too. I haven't really put my finger on how or why (and I'm not going to spend much time on it), but:

Everything seems dark and desaturated, as if the the only clue we have (color!) for matching things up has been deliberately reduced.

And then: It sure does feel like the legend has even more of whatever-that-is going on than the map does.

I find it difficult to look at the map and understand the information it relays at the same time.