Burning is one way of reducing the supply of the token.  So in the essence of supply and demand, burning is an artificial way of reducing the supply making the sell pressure to be eaten out while the demand pressure is increasing.

This also shows that the developer believes that the token in circulation is too much so there is this need for them to intervene and cut the existing supply.  I think rather then burning the token supply, the dev should work their ass out in creating use case for the token.  It will also give a better result if aside from burning tokens, the developer are creating partnership to different company and individual in utilizing the use case of the token.  After all, adoption pushes through when there is a need for an individual to have the tokens in their wallet.