You're making the same mistake the article is making.
There is a huge effort going on to frame striking actors as if they're anti-technology and to turn what should be a conversation about clearly unacceptable studio terms around IP rights into a philosophical debate about the nature of progress. If the union organizers all come out and start condemning Project Gutenberg then fine, we can have a conversation about Gutenberg then. But as far as I can tell online, that hasn't happened yet.
And even if we do end up having that conversation, it's not at all clear that striking actors are going to feel the same way about nonprofit accessibility tools as they would feel about purely profit-motivated projects for Amazon books or (more relevant to the actual strike going on) movie studios. These conversations oversimplify what actor demands actually are.
Before you get into a giant argument, check to make sure that the argument is actually happening and isn't just the result of a single Internet article by a single writer. Made-up conflicts online started with "people on Twitter say" junk pieces that would quote single-digit follower Twitter accounts as if they represented a consensus, and have now moved past that into pieces just kind of confidently stating what demographics believe with literally no sources at all. If union organizers have a problem with Project Gutenberg, they will say something about it at some point.
And maybe they will! But I can't find a source on that yet; as far as I can tell from some quick searches we have one isolated article online framing this as a major conflict with unions even though there are zero actual union organizers in the article saying that it's a conflict.