I am convinced at this point that the brass at Google doesn't even know about Keep. It'd be dead a long time ago.
I have the same suspicion regarding Google Podcasts. The UI is stable and it doesn't seem to try very hard to promote ads or podcasts I'm not already subscribed to. I do worry that someone in Google management will realize that this product exists and decide that it's in their personal interest to either "improve" it by rearranging the entire UI until it's unusable, or just shut it down entirely.
Have you seen "podcast" tab on the channel's page on youtube. Most likely they will kill the app.
My wife and I both refuse to forgive them for killing Inbox. That was a wonderful product and really made a difference with email sorting.