Mixers haven't become effective nor we need to use it.
Mixing company transactions may not be fast but at least your anonymity is sure which is the most important thing and I dont know why you believe in the news hype posted by Cointelegraph which was knew for adding sugar to their articles.
Since it was started in order to stop any scamming issues, it possible we all coming that way and lost the anonymity that supposedly we have.
I don't see that happen mate. I'm sure a majority of the mixing company like Blender will examine the analytic equipment and if it does expose anonmymity, an advanced tumbler equipment will be established. Besides, it hard for any analytic equipment to expose anonymity created by genuine mixing companies.