Probably an unpopular opinion, but I don't actually mind it. There's now a bunch of layers that are selectable on the radar page itself, which were either nonexistent or hard to find on the old site. There's an easy to understand hourly forecast, instead of the text only one (which is still there), and I had no problem finding the 7 day forecast. Also there's finally HTTPS by default!

Of course if you don't like it, this still seems to work for the old website: https://reg.bom.gov.au/