Yu Suzuki should just email everyone the following:
"Hello Shenmue 3 backers... thank for supporting Shenmue 3.
I've decided not to honor any of the rewards and instead invest the money saved directly into Shenmue 3. This will result in a much more enriched Shenmue 3 so I'm sure you'll all understand.
If you would rather have your useless prize trinkets and a cheap-ass Shenmue 3 then go fly a kite.. and I mean you personally."