I happened upon these interviews on a podcast by two German former game journalists (not paywalled; the interviews are in English, after a short introduction in German):
An interview with Michael Gentry from 2019: https://www.patreon.com/posts/stay-forever-mit-32317592
Two interviews with Bob Bates from 2017 and 2020:
- https://www.patreon.com/posts/conversation-7955349
- https://www.patreon.com/posts/stay-forever-6-41488170
And for people who understand German, here’s an interview with Guido Henkel in German from 2019: Stay Forever Podcast
(this was actually what led me to find the podcast, as I was looking for information on his game “Drachen von Laas”, prompted by rovarsson’s question in another thread)