Replying to SPK Rivets Removal

Cheers from Russia here!!
The thing is.. I guess loads of ppl know there are some rivets in the SPK Kaos boots, two of them are fixing the cuff on the back, and one is on the top of the tongue. So, if i want the boots to be softer (the unmovable cuff pisses me off really) can i just remove all those 3 rivets? will that work? Or this will do some bad things and will nuke the hell out of my boots? Soo, any comments?
I guess this can actually be a dumb question...
Thanks for any help guys!