Thank you for your answer @bjoernek,
Firstly :
I was only using the terms of the proposal itself as show the photo and overall the introduction of the proposal to the forum when we have been asked to give a feedback to Dfinity :
Secondly :
I disagree about such a description of the purpose of the motion proposal : it has the very aim to ensure that it cannot be predicted how much ICP is produced from maturity, yes, BUT ONLY TO avoid the tax burden for PRECISE people suffering of THEIR tax jurisdiction. I am in favor of relieving them of course, but we are not all in this case, and the disappearing of the tax suffering for this people is about to become an appearing of suffering for other ones. It is perfectly consistent to let predictability for those not suffering from it. We don’t need to go from an extremum to another one : by going to predictability for everyone TO unpredictability to everyone.
By setting this features an opt-in feature : the ones that this proposal was aiming to relieve are relieved, and the ones that have never been concerned by tax problematics keep going on without having to suffer anything.