Earlier quoted context omitted.
Not everyone who takes on this debt is "the smartest and most privileged members of society", and childcare costs are outrageous (according to several families I know; I haven't felt financially secure enough to have my own progeny and at this stage in life it seems unlikely I'll have the opportunity).
That's why I said "it's hard to compare them". One of them is a true problem, and the other is a debt that fully informed, smart people elected to take on and plan for.
In practice, this is completely false. When I was about to graduate not too long ago, there was an entire cottage industry of (perhaps unwitting) propagandists pushing student loans on highschool students as a "no brainer" investment. "You'll make the money back in 2 years, tops! Now go and find yourself"
Placing blame on any of those students who were not able to make the money back quickly and are now struggling is either a display of ignorance or lack of empathy.