Good advice but the wording detracts from his point. What is “a lot of alcohol”? Some would say “no alcohol” which is clear, but if what he really means is “don’t drink excessively” then that’s what he should say.
Parents who allow their kids to drink with them when underage would be turned in as abusive parents by today’s standards, but there is logic in helping a kid learn the difference between “having a couple of drinks” and drinking so much they pass out. Many of us learned this the hard way.
“Parents who allow their kids to drink with them when underage would be turned in as abusive parents by today’s standards, ...”
In my state, it is legal for parents to serve alcohol to their “underage” children at home. We did this on a few occasions at dinner precisely to teach her that responsible consumption of alcohol can be part of being an adult, much like responsible driving.