I posted this comment on the video itself but will paste it here in case you @Dima see it:

Very well made video Dima!

I did not understand the "solution" part. There was a guy who was planting a crop with all of the other plants, so no herbicides. But how can you harvest that on a big scale? Also how about invasive species when you dont control for that?

Also wouldnt it be better instead of 3D printing that thing for bees, with plastic, to use wood?

Great job overall!