Blocked emails still show in "all mail"

macOS High Sierra Version 10.13.6

I am using my Gmail address with the generic Apple Email app on my MacBook Pro.

In Mail preferences, I've created rules to block/delete mail from specific spam senders.

Mail from these specific blocked senders still show up in "All Mail", yet I assumed they'd be blocked and deleted just as has happened in all of my other folders/inbox.

Why don't my "rules" apply to my "all mail" folder, and/or how do I force this folder to comply with my rules as the other folders/inboxes have?

Is this simply an existing flaw of the rules option, and is there a work around?

Apple chat couldn't tell me what to do.

Thank you for your input!