No.. this is an unreasonable argument. Whilst you might think garish adverts are unsavoury, I don't think you should compare it to illegal and terrible things such as rape.
To be fair let's make a distinction between spam (scattershot bullshit emails that nobody has ever asked for) and actual marketed targeted advertising, which both my employer do (with double opt-in) and I myself respond to pretty regularly. In fact it got so bad I had to unsub from a few amazon emails because this time of year I'd see some silly thing in their email and be like "oh my mom would like one of those" and I racked up like $400 on my credit card over a week.
Those are two different distinct forms of marketing, one of which I have no issue with, other than my impending financial ruin.
Marketers aren't dumb.. they wouldn't invest so heavily in this if it wasn't effective.