PLASTIC WITH PROGRAMMABLE DESTRUCTION

My coffee maker broke down because the plastic cap with security pressure valve was made from plastic with programmable destruction.
5 years of life and then is crumbles like an old bread. The rest of the machine is absolutely ok.
One guy familar with plastic technologies told me that this kind of plastic was designed for maximum 4-5 years of using and then is degradable.
1) Due to enviromental reason (official but bullshit).
2) Due to marketing reasons (unofficial, but real).
Of course the spare part is not achievable to buy because my coffee maker have 5 years and nobody have the cheap spare parts on stock
And now I must throw out the whole, almost good coffee maker and buy some other shit for next 5 years, because I can't buy the plastic cap for 2 cents.
This is the way to build the chinese economical empire with the help of western engineering and stupid ecologists.
I hate this world.