There is no such specific rule to say Podcast Titles should be italicized. However, most writers follow the general rules crafted by the American Psychological Association and so emphasize highlighting important characters or notes in podcasts to avoid any kind of plagiarism troubles in the future.
Coming to the reason the titles need to be italicized in Podcasts
Highlighting the title and certain lines in the podcast makes sense as it attracts readers to get a gist of the body of podcast content. Also, it helps search engines to analyze the content and precisely serve it to the audiences or listeners.
Usually, many people think that their job to attract listeners or audiences is done by crafting the title. But Italicizing the content helps the storage directories to expose the content to more web traffic, thus paving the way for more clicks and leading to the generation of more ad revenue.
As most people do text scanning to understand what exactly is in the podcast, it makes complete sense in adding paragraph breaks, bulleted or numbered lists, and bold or italicized headings. This eases their mind from learning things on one go and adds value to your content, which can lead to an increase in bounce rate, meaning web traffic that comes back after the first episode.
And as videos are more appealing on social media, as they have the potential to turn viral, italicizing the headings in podcasts can help in reaching more listeners or audiences.
Podcast Content is essential
Eventually, it is the content that helps in bringing an identity to you and not the way the titles are being presented and the way the website has been laid out.
That means content plays a key role in highlighting your career in podcasting, as listeners or audiences appreciate the content first and then the creator of such content. If the content is weak and the presentation is strong, meaning if you put catchy headlines, 3-4 bullet points, and overall show notes, there is a high probability that the content might get rejected. But if the content is strong and you follow all such marketing tactics by adding required bells and whistles, it can click to a great extent and earn you more than you expected from podcasts.
Joe Rogan Success
Like how podcast host Joe Rogan has made a career by creating podcasts and is returning every year with a new season. He is going with a motto of creating content per listeners/audience needs and attaining success accordingly.
When we are getting paid fairly, naturally the enthusiasm to make a mark in our career builds up and then success follows the invested hard work. But to reach the level of receiving a good paycheque, we need to stay patient, target the right audiences, highlight the headlines and content, educate the audiences, keep them entertained, add value to the show by inviting guests, and deliver it in an orderly manner and most important to make the podcast viral on multiple social media platforms. Remember, these principles hold for both audio and video formats of podcast creation.