I was surprised by your statement of MEAN dying down but I checked out Google Trends and it seems you're right: https://www.google.com/trends/explore#q=%2Fm%2F0_v9b5j. I wonder why that is and what's taking its place?

Honestly just personal experience as someone who's heavily in the more "cutting-edge" JS world.

While Angular 1.x is still big, most new things are made with React. Mongo has gotten a ton of bad press over the last few years that it's hard to find positive things about it any more. This has more of an effect that you'd think. Express and Node are fine though.

What I mean is that Rails, though older, is still much more popular than MEAN.

Ironically my work place uses Express and Mongo, but React!

I don't see anything dying down in that trend.

The last point on the graph is for July which is very partial data, so it's probably best to ignore it.

Without that point, the trend seems to be upwards.

I wish it was dying down - I do not have much love for any part of that stack - but Google trends does not tell us that.