It never did.
Yes it has. I know, it happened to me.
I use to be in a very specific small market niche whereas I produced custom items that were found to be very popular. While there were other competitors, they were few and they didn't know anything about SEO let alone how to spell it. My traffic was good and sales were so good, I eventually quit because I was too tired fabricating all the time. I quit that 3 years ago and the keywords were found for a period of about 1 1/2 years in the 3 years prior to that.
Anyway, I say that because I had keywords in my meta that gave me #1 to #5 results based on what G saw in my meta tag keywords. How do I think I know? Because those words were never mentioned anywhere else on the site and in the meta description, only in the meta tag keywords. And many years before that there was a time when webmasters only had to stuff words in their meta tag keyword area and they would have good results. Of course it didn't last too long as G fixed that right away... but it did happen. Also, in my analytics, I got to see how people came to my site and when I see the keyword they used and came to my site due to that and the only indication of that word is in the meta tag keyword area, that's proof in the pudding.
Today I usually place 4 to 7 of the best keywords I use for traffic in there to give me peace of mind, but Matt C pretty much says G disregards anything written in there.