It's not about privacy from companies who want to sell you vitamins, it's about Russian government wanting to know who you are so they can target you with political misinformation etc..
Which is something not only Russia is doing with that information, it's a very widespread practice [0] and one that many think should be considered a bigger issue itself, rather than who makes use of it.
[0] https://www.bloomberg.com/news/articles/2017-09-29/the-germa...
I am pretty sure it was happening for a long time.