Burning is as common as altcoins but let me remind you that it isn't as clearcut as it sounds.
Burning permanently reduces total circulating supply, which means more scarcity, which means more value right? Wrong, if your token anyway can just have arbitrary reductions and increases in supply (burning is arbitrary if you think about it unless it's fixed into the system).
Of course burning of any coin is good for the project and we have seen an increase in the price of the tokens who have burning as a part of their road map but thsi does not mean that all the tokens which are being burned are good to buy. I have not heard about this PEAK token so could not advice whether its a good investment or not.