It feels like a great material at explaining the field to new joiners.

My team is currently migrating from software to data science and this publication feels exactly like something that would bridge the gap

What company do you work at where they're willing to train a bunch of developers up to data science from scratch? That's a multi-year investment if you want a team that can actually solve real problems without causing more problems.

data science isnt that hard!

Well, it's mostly impossible -- i guess that's a certain sort of way it isnt hard.

It's not hard in the same way software engineering isn't hard. That is to say: it's hard to do well.