I won't talk 'negatively' about it, but I will state that for overall body recomp (losing fat while maintaining muscle), I feel that higher intensity work is better. The double edge of the sword though, is that it can be very taxing, and if you get carried away (ie. 40 mins each session, 5x a week), you WILL LOSE MUSCLE. However, if you do it 2, maybe 3x a week, your overall results (and your mental state) will be better than if you killed yourself doing 1-2 hours of light cardio every single day.
The smart trainer will take advantage of key points in both methods. Once I'm full into a prep, I rely on 2x every 6 days of 20-25 mins (MAX) Interval work to keep my metabolism buzzing around the clock. If I feel that I need an extra 'slight' push, I can add in SMALL amounts of steady state work (usually very easy walking on an incline treadmill before breakfast). I do this NOT to burn calories around the clock, Not to affect my metabolic rate and affect nutrient partitioning like the higher intensity work would, but to simply burn 50, maybe 100 extra calories. It's nothing dramatic, BUT if you do this every day, at the end of the week, you've got an extra 500-700 cal deficit, which can add up as you get into the low single digit bodyfat levels.