go into about:config to kill even more things there. which I just wanted to share
Well, looks like my custom pocket settings are preserved, if they're useful to anyone:
browser.newtabpage.activity-stream.section.highlights.includePocket false
extensions.pocket.api 0.0.0.0
extensions.pocket.enabled false
extensions.pocket.onSaveRecs false
extensions.pocket.settings.test.panelSignUp v1
extensions.pocket.showHome false
extensions.pocket.site 0.0.0.0
services.sync.prefs.sync.browser.newtabpage.activity-stream.section.highlights.includePocket false