When you've had a gmail account for ~15 years, every advertiser, info reseller, marketer, phisher and spammer alive has my email at the top of their list.
Is what it is, but with Inbox I had 0 issue controlling all of it, and with gmail, all of this garbage is dropped directly into my HIGHLY IMPORTANT >> INBOX with zero filtering or analysis (even though I have, no kidding, over a hundred manual filters containing THOUSANDS AND THOUSANDS of email addresses all of them "Mark as promotion / Never mark important / Skip the inbox / Never star / Archive immediately" and yet, every week, dozens more appear, so I add yet-another filter to the piles of hundreds, yet another dozen email addresses into the piles of thousands.
And yet with all of this work, I know my inbox will be a useless disaster by next week.