I've been using privacy badger [0] and ublock. Is this containarization still something I need to worry about?

[0] https://addons.mozilla.org/en-US/firefox/addon/privacy-badge...

yes. containerization allows you to segregate your browsing sessions even when necessary page functionality includes code/assets from entities that would use that inclusion to track. think of it as minimizing your surface area. temporary containers in particular are like a fresh session in every tab.

i combine containers with noscript, ublock, and decentraleyes.

You can literally use the two hand in hand. You don't have to use one or the other.

Same, been using for about a year and love them.