A permanent/indelible marker bleeds/appears through paper (?)

Valerie, we have a little thing in English called articles – perhaps you’ve heard of them?

И кто сказал, что permanent, тем более, что для бумаги это безразлично?

так написано на упаковке

Не понял.
permanent marker - это разновидность маркера. Есть и другие разновидности, например, highlighter, white board marker

Разновидности marker pen?

Да, я вижу wiki, но там же есть и felt pen, и я бы сказал, разновидности felt marker
https://verbnow.com/types-of-felt-markers/
По-моему, felt pen больше подходит для русского "фломастер". Кстати, только сейчас до меня дошло, что название как-то связано с flow.

так написано на упаковке 😂

So because you saw the word permanent used to describe one type of marker, that means all markers are permanent? 

But that’s the least of your offenses in that “translation” – it has no articles. It’s perfect Runglish. 

Any writing implement that has a flat, angled, wet nib is a marker.

flat - not necessarily. This is more typical for highlighters.
Permanent and white board (drywipe) markers usually have rounded tips. Possibly, 'marker' isn't the best name for them, but that's how they are called.

Not necessarily flat, no, but wet and somewhat “heavy”. Marker is an adequate general name for them because they’re in essence used to mark, highlight, and otherwise call attention to what’s written with them.