I've heard about this way back but only recently started to read more about it.

For those who do n't know what I am talking about check these links: https://www.daglabs.com/ , https://eprint.iacr.org/2016/1159.pdf

Tho one thing is not clear to me. I get it in this protocols miners are like going rouge and simply mine as many blocks as they can and thus creating this graph of blocks. The problem that I see is that it is not neccessery to mine blocks which will contain the same transactions in them. As I see this it is just puting more weight on the network in terms of how large this DAG can actually be. Yes it can scale but then to run a node you will have to have good internet speed and a lot of space on your hard drive with some of these blocks being totaly unnecessary added to the network.

Can somebody shed some light and explain me why is this proposal good or you belive it is bad, why so?