Is using Q-carbo(or any cleaner)ok during pregnancy?

[Burnt Toast]

When you are high, your fetus is high. Doing any drugs while pregnant is irresponsible.

There is no evidence that smoking cannabis is harmful to the fetus.
Prenatal Marijuana Exposure and Neonatal Outcomes in Jamaica: An Ethnographic Study

So why would you label pregnant cannabis users as "irresponsible"?