Chris Bowler:

A lot of sites (big or small) are starting to remove dates from articles. Whether it’s so the content appears to be evergreen or SEO tactics or other, it’s bad form. The date is an important piece of information about an article.

I’ve noticed this trend as well and I absolutely hate it. I can understand downplaying when the article was written to some extent, but don’t remove it entirely. No matter what the topic is the date of publishing is always relevant.