i`M really annoyed of this fungibility problem that bitcoin has, we should resolve this fast or bitcoin can become an instrument of tyrrany in the future.
What do you mean by "tyranny"?
I think it refers to posiblity that validity of your transactions will be controlled by some third party companies/organisations, whether their are clean or tainted.
Andreas Antonopoulos says that fungibility issue must be address to reduce risk of such third party control. He explains:
"we really need to address the issue of fungibility. Blacklists are inherently evil, as they seed control to the author of the blacklist and that control is absolute.".
https://www.youtube.com/watch?v=ak1iojpiHpM&feature=youtu.be&t=33m6s