Gunhed TV (David Hecq) is a known french youtubber with some videos on Amstrad CPC.

His last video 5 days ago is about the flamboyant fiasco of the Amstrad GX4000, to be compared to the video on the same subject : Histoire d'un Flop : les Amstrad 6128 plus, 464 Plus, et la GX 4000 by Générations Micro in December 2024.

David HECQ is also the author of the book Marion et les crocodiles d'Amstrad : L'histoire d'Amstrad France recommended by Roudoudou on his Discord. I did read it and it's a good one.