I am pretty sure it doesn't bother them. They don't actually go through the data, otherwise encryption would defeat the surveillance. There are many other more

I am pretty sure it doesn't bother them. They don't actually go through the data, otherwise encryption would defeat the surveillance. There are many other more useful signals (and the fact that you use encryption is probably one). The goal is to find outliers, not people using scary words Furthermore it would be probably quite easy for them to filter that kind of "DoS", it is just too simplistic. If you come up with something more clever they probably are interested about knowing more about you anyway.