Earlier quoted context omitted.
To me ads are fundamentally about misleading you, manipulating you, or in short: making you do something that you wouldn't do otherwise. This to me is morally wrong on a base level. Advertisement is an attempt to attack/manipulate your vulnerable mammal brain to make you do something against your interest (be it buying a product, voting on someone, etc). In other words, to do something that you wouldn't do rationally…
People don't act against their self-interest unless deceived. There are misleading ads that are immoral like "payday loans can get you out of debt", but the vast majority of ads (that I see) are informational, like "store X is having a sale". That's just giving me information to make a decision about ("$N is a reasonable amount for me to spend on this thing I didn't previously want"). I could make a similarly wrong b…
They can also be stupid.