Sorry, I do not know anything about fundoplication surgery and hiatal hernia.

Regarding reflux, are you stopping all eating and drinking 3 hours before bed, and sleeping at an angle? Do you know what triggers you? For me it's onions and dark chocolate (very sad!) I believe the reason for PPIs in lung disease, especially ours, is that they cut down on acidic reflux. While we might still reflux it won't be harsh acid. With your doctor find the lowest dose possible. During a healthy streak try to wean yourself and see how you do. Weaning can take 2-3 months. I hope this is helpful!