Think of the awesome fate of those actors and actresses who performed in such flicks. Professional suicide. I saw some of the films depicted, Lord help me. Perhaps I can claim extreme youth?
Steve McQueen’s first movie was “The Blob.” He went on to stardom. Zsa Zsa Gabor starred in “The Queen of Outerspace” and she has been famous for being famous ever since.
I think an early role for Clint Eastwood was in one of these or something similar
Jack Nicholson did at least one Corman film.