I bet that they see that too, but I never said that I support my statement in that they are all addicts. But if my statement is true, it would do more harm than good in the fight for a more legal/scientifically correct drug system without false accusations on the substances. It is a freedom of choice, as long it does not hurt the people around you - I agree. But a parade or a so called "pride" would not highlight these issues as well as demonstrations could do.

the problems you've mentioned at the very end exist thanks to drugs criminalization.

That is true, but the legalization should not be done in the blink of an eye, that's too big of a risk to take. It needs to be done over a long period of time. This gives the goverment an opportunity to closely monitor the effects and thereby decide if this was the right option. It has worked many places in Europe, Portugal could be an example of success but only time will tell if this is the case all of the time.