On-boarding really does seem to be the major pull. I've been developing along side docker containers for years now and I just don't see that changing.

I do see value in it, though, after the comments and after doing some additional reading. I could see myself pushing this direction if the teams I worked on had higher churn rates or more frequent new hires. Also, I think that it lends itself well to certain tech stacks / languages / ecosystems than others.