Marketers, spammers and scammers are the same thing - sources of unsolicited e-mail, engaging with whom is not good for you. Eliminating marketers from the trio means only that much less messages to worry about.
I guess I must not be important enough or something because I don't recall the last time I got any marketing emails without sharing my email with a marketing person. The only marketing outside of "Rewards" programs that I get is marketing from the one conference I go to every year, and I get plenty of free swag from them, then I unsubscribe.
Did you take a look at your Spam folder? On my primary address (one I used for almost two decades), 90% of my spam is unsolicited marketing communication. Quickly skimming it, roughly half of that 90% is from parties I may have interacted with in the past, the other half is from apparently legit companies that I haven't interacted with, that pulled my address from somewhere (possibly because I used it to register my business).
Outside of spam, I spent some time and unsubscribed from most of the pseudo-solicited communications I got (i.e. the kind of pre-GDPR bullshit where I register for some service and this automatically counts as consent to receive marketing communication). About solicited marketing messages I don't whine much (except that they exist), that's on me.
(I actually used this occasion to softly threaten one of the marketers from the top of my box with legal action, because they are clearly breaking Polish law - they tried the "this message is only request for consent to sent the actual message" trick, but executed it badly.)