... For starters, gliders are totally exempt from both the ADS-B OUT and transponder mandates.

Is that really true? The way I am reading the mandate, ADS-B OUT will be required for gliders that operate inside the Mode-C veil and above 10,000 feet. I know that doesn't apply to most of us, but there are at least several operations in the West that will be directly impacted. I'd love to be mistaken about this.