Folks should follow medical advice and do what works for them, but be aware that these guidelines were established prior to the obesity epidemic. I’d be highly surprised if someone weighing 300lbs vs. the same person weighing 190lbs should be losing weight at the same rate per week.
I imagine these will be updated to be body weight (or fat) adjusted as time goes on, like some doctors are already doing.
This study says you may get a better body composition if you do it slowly, but also resistance training during weight loss helps prevent 93% of muscle mass loss. [1, 2]
This study says fast loss means more loss, and is actually better for long-term maintenance. [3]
Due to the risk profile of obesity, and this is not medical advice, I think there's a lot of room to take more risk if it helps get you back to a normal weight. The consequences of not are just too high.
[1] https://pmc.ncbi.nlm.nih.gov/articles/PMC5702468/