Let me introduce the idea by saying I use a spreadsheet to track what episode I want to listen to Spotify is so horrible and obnoxious about it.
The web player is absolutely horrible at this. Can't read the description with the weird white background and can't select all and copy paste neither. Impossible to manage.
The desktop app is better but lacks a feature allowing to mark a podcast as "listened" because some of us listen from different sources or have listened to older episodes elsewhere. Even if this is better on the desktop app, I still use the web player because at least there I can see the video but I have to manage my episodes on a spreadsheet.
I'd also like a way to add a note or color code the episodes. For reference, here's a glimpse at my spreadsheet. I put in red whatever I want to listen to while focussed on the episode like driving because the guest is serious and others are comedians and lighter stuff I use while working or working out. I used to be able to copy the descriptions from Podbay but you know...
People don't want to use podcast in a playlist like songs because most of us won't listen to many in a row. It's more a list we keep track of what we haven't listened yet to browser and choose from.