All unsold tokens will be burned.
I believe if unsold tokens will be burned later, we can see AMM tokens have a good value and high price when hit on exchange. As I read on micromoney facebook page, they have made discussion with binance. Lot of hype.
If the rest of the token is burned then it is good news, so it can reduce the amount of token supply, and better supply slightly makes the coin price more expensive.
I agree with you
Because of the fewer the number of token in circulation the more value that token.
Just like gold, it has value because the amount that can be mined is limited.