While that might be true on the surface, I just don‘t think it‘s worth it.
Anthem has had many problems and being a live service game was just one of them. Converting it to a single player game wouldn‘t solve the myriads of other issues like boring mission design, a very samey and needlessly huge world, loading screens everywhere or the complete disconnect between story and gameplay where you get too much story within the main hub having to listen to NPCs babbling for hours, while getting practically no story at all while actually playing the game.
Making the game playable again would be a good thing for preservation, but I really can‘t imagine a lot of people actually having fun with it. I think it would be a better use of the developers’ time to analyze the many reasons for the game‘s failure objectively and learn from that for future projects. I don’t think this former exec has really done that, if he still thinks Anthem is salvageable as a game.
Well, you could argue that it‘s a valuable learning resource. It was one of the biggest failures in gaming history and to really understand why it failed so badly, it would be best to actually play it. But, like I‘ve said, I personally don‘t think it‘s a good idea to waste the developers‘ time on a game which they know won‘t be fun. I‘d much rather have them working on a new, enjoyable game where they can apply what they’ve learned from Anthem‘s failure.