if you're going to do video and you have an audience that will pay for it, you can basically just slap a BTCpay server up and link it to your node and shill that link everywhere you post content

As for returns, GDN cant be beat they've got the widest network of inventory and most competitive auction so if you're making a living off the ads you can't really move to other things like Rumble or the ones you mentioned above

As for podcast, check out fountain and podverse and music you can check out wavelake