The kid becomes so engrossed you (as a parent) can almost pretend you are childless again. Its a strong temptation.
Then it is much easier for us all to blame the iPad itself, when it was actually a tool the parent used to dodge a bit of their responsibility.
That doesnt address all the different issues the article covers, but its a part of it. If we as parents didnt have that “out” then we would have to experience, adapt to and plan for more of our children’s development.
And for the record i do give my kid a tablet, but use device profiles to restrict her to only FaceTiming relatives and drawing. No video. This has made it so boring it is less attractive to her than magnitiles.