I suspect Furqan is correct that podcast creation is a feature for teachers only. You could always contact Support with your idea, but it would probably be easier for you to simply register as a community tutor and teach Polish. This would also give you some real-world feedback on how and why students are learning your language, and what their interest in your culture is.

Hey Adam, I scanned through this link: https://support.italki.com/hc/en-us/articles/4414371487257-Our-Guide-to-Creating-Great-Podcast-Now- and it seems like only Professional Teachers/Community Tutors can upload podcasts here ...