I guess things like Speech Pattern Analysis don’t exist then, nor has Big Data ever been known to sift through data to connect data points.
Like unless your job is director of IT Security for Microsoft, I doubt you have the credentials to be as anonymous as you think you are.
On top of the fact that most people know that the more you try to anonymize yourself, the more you actually make yourself unique in terms of data because very few people use obfuscation techniques, and those techniques are well known. Thus, if they think you’re obfuscating your identity, you’re now just thrown in the “people who like anonymity” bag of data, which when connected with previously collected data on “people who like anonymity” can be used to create a profile on you, specifically.