These indeterminate progress bars in modern macOS are just * not it *... They remind me of something Android OS would do. Plus, in screenshots, if captured at the right time, they could look just like a regular determinate progress bars.
I've said it before and I will say it again. I miss the old barber pole style indeterminate progress bars. They were uniquely “#Macintosh" and they were fun.
These are just... boring.