Every time social media as a marketing tool for authors comes up, someone mentions that famous author who doesn't blog, the rich author who has no online presence whatsoever. The argument is that you don't need an online presence, blogging, social media, to become rich and famous, or succeed in whatever way you define success, as an author.
Back to Reality
It’s also possible to cross the ocean in a rowboat. I’ve read about it. It’s not fun.
If you truly deeply hate social media, find other ways. But if you just don’t want to do the work of blogging and interacting online, or if you’re just being contrary, you’re making it so very hard on yourself.
Speaking in absolutes is always counterproductive (oh, I see what I did there.) But as a general rule, it is best if an author has a blog and posts regularly. It is best if an author has a social media presence and engages there regularly. It is best to make use of the tools that will engage with your potential audience where they are: online.