Boeing decided on this after a number of occurrences when the somewhat sluggish 757 response in roll
The 757 does not have a sluggish roll response, it does however have a large control wheel displacement compared to roll response, sluggish is not a description I would use.
The video seems quite a nice example of this - and a fair indication that this aircraft operator didn't take up the mod!
Have you actually flown a 757 in 40 gusting 60?