Archive Page With Query Loop Added Via Content Element Displays Posts Repeatedly

Should I not be using the query loop inside an archive page?

That's correct, query loop block is supposed to add loops into static pages.

The content you build in Block element - Content template will apply to every post in the loop of your archive page as a template, that's why it repeats.

Please check this documentation and video to have better understanding on how to use content template:
https://docs.generatepress.com/article/block-element-content-template/

Okay. That makes sense.

On the archive page, the title is Archives: Podcast. How can I change that to just show Podcast ?

And another question - on an archive page, where do I set how many posts appear and customize the pagination at the bottom and stuff?

On the archive page, the title is Archives: Podcast. How can I change that to just show Podcast ?

You can use a block element - page hero to replace the default archive title:
https://docs.generatepress.com/article/block-element-page-hero/

on an archive page, where do I set how many posts appear and customize the pagination at the bottom and stuff?

Posts number is controlled by WP core, you can set posts number at settings > reading.

How do you want to customize the pagination? If you don't want the numbers, you can try using a block element - archive navigation:
https://docs.generatepress.com/article/block-element-archive-navigation-2/

Great, thanks for the help!

No problem :)

Just chiming in to say that there's seemingly an existing forum thread for every obscure problem I have and the answers from Customer Support are always amazingly succinct and helpful. I'm new to GP/GB and we are blown away by the level of support. Kudos team.

Hi Justin,

Thanks for the comment, we are delighted to read it :)