I'm not sure it's a "cop out" so much as probably the best way to actually fit that film into Legends. I'm pretty sure that stuff like freeing Chewie, winning the Falcon etc is just not going to match up with the Legends version. It has nothing to do with the quality of the film itself, and Luke feeling it was bad in 'Shadows of Mindor' would just be an in-joke to the fans. Luke felt the film was overly theatrical and Lord Shadowspawn reminded him of scenes from 'Han Solo and the Pirates of Kessel'. If you've seen the trailers for Solo and its villain, and seen pictures of Lord Shadowspawn from the EU, it's bizarre how well it matches up. I'm not saying all Disney films should be classified as holofilms, but when there's already a Legends 'Han Solo and the Pirates of Kessel', why not use it? I'd even say the in-universe Crimson Empire 3 was actually the comic, but for timeline reasons (the holofilm Crimson Empire 3 came out in the Clone Wars), this can't be done.