I don't think Gigguk has ever done a full - fledged review of the Fate visual novel. There are so many anime - related things to cover, and while the Fate series is popular, he might not have had the time or inclination to specifically review the visual novel. It's also possible that he feels that the anime adaptations are more accessible to his audience and thus focuses more on those rather than the original visual novel. However, this is all speculation as there's no concrete evidence either way.
I'm not sure specifically what Gigguk's opinion on the Fate visual novel is. He might like it for its complex storylines and diverse characters. Maybe he appreciates how it weaves together different mythologies.
It's fairly common. Fans often look for more content related to their favorite shows. Since 'Attack on Titan' has a large and passionate fan base, there are a lot of fanfics available. 'Aot' fans might watch (read) these fanfics to explore different scenarios that the official story didn't cover. For example, they might want to see how a certain character would react in a different situation or what would happen if a major plot event had a different outcome.
There could be various fanfictions. Maybe some that focus on alternative endings, like ones where certain characters survive who didn't in the original. For example, a fanfiction where Erwin survives and leads the Scouts in a different way.
It could mean that a person who is a fan of 'Attack on Titan' (AOT) is reading or watching fan - created fictional works related to AOT. Maybe they are interested in seeing different interpretations or storylines that fans have come up with.
One way is to check on popular fanfiction websites. Look for ones with high ratings and a lot of reviews. For example, Archive of Our Own (AO3) has a large collection of AOT fanfictions. You can search for the most popular ones there.
Definitely not. AOT is a work of fiction that combines elements of fantasy, action, and drama. It's set in a made-up world with its own unique plot and characters.
The AOT manga has finished. It wrapped up all the major plotlines and provided a conclusion to the story that fans have been following for a long time.