90 second updates like this (and indeed 60 seconds back in the day) are just
to watch. They're so rushed and crammed in, it becomes a total blur. I don't think viewers take anything away from watching that, if indeed they pay attention.
I don't understand how something as short as 60 seconds can be exhausting to someone. 60 seconds used to have 5 stories in the bulletin, the 90 second update also had 5 in the national segment, 2 in the regional plus a quick regional weather update. There's nothing there to get exhausted over.
Some Indian News channels have bulletins that advertise themselves as having 100 or 200 stories rapid fire, with each 'story' being no more than 10 seconds, and often as little as 6 seconds. Now that truly is exhausting.