When did Lo-Fi get so popular?

I have been listening to it for years. I also listen to video game music remixes and things of that nature. Within the last like 2 or 3 years, it seems to have really blown up and become trendy. It seems weird to me. Like when I used to mention it, no one knew what I was talking about and now most people seem to know the genre. When did it actually become popular? Is it considered a mainstream genre now?

I love Lo-Fi music as well. It’s relaxing , and calm.