HTML has luckily until recently been too limited to allow many of the UI atrocities well paid developers at huge software companies have managed to produce.
Take a look at the in depth critique of Lotus Notes. Half of it is still valid for the current version 18 years later. I thought I'd gone crazy the first time i tried to use the somewhat special IBM password prompt in Notes 9.
The rise of the Web, which has no such toolkit, as an application platform has therefore opened the doors to UI atrocities the likes of which the perpetrators of these could only dream.