Everyone has an opinion, here's mine.
I hit the garage with the rops with my old tractor. With this one after hitting it again I had it cut down and rewelded by a certified welder. I assume responsibility if it doesn't protect me in a rollover. When I sell it the buyer will have the choice to do the same or they can buy a new one.
I wonder if ROPS are designed to protect the tallest people that might buy the tractor, or to maximize the protection that a higher ROPS gives to minimize a tip over from turning into a roll over.
If it is the former, and you are not perhaps six feet six inches tall, then you could shorten the rops a few inches and still have the same protection.
Since the ROPS is fold able, sure seems like a ROPS that is shortened a couple inches would provide more protection than one that is folded down.
Myself, I would shorten it in an instant if I had the same situation. But that is just me.
We all make our own decisions and live with the results.