Nice interview. It is curious how so many are drawn to do the "same experiments" so to say. Like the glue records, feedback loops, tape loops, without knowing there is a "scene" for stuff like this, but just going for it. In Special Interests #16 there is interview with old Polish industrial artist who also mentions how a lot of early works was just technical experiments, rather than music.
Curiously some months ago got big pile of second hand Integrity albums to my store and listened quite many of them when deciding if there is something I need to keep and what to sell. Most went for sale. With this type of metallic hardcore, there is very limited amount of stuff I need for my own shelves, but have been listening a lot of them recently.