Why is everyone worried about unlimited?

I think the underlining point which is somewhat valid he's trying to make is that hackers will have to invest more gear than they do now in order to fight these bosses. Which comes with slightly more risk.

I agree that it has some validity, but as Unlimited also brings about the increased chance for epic and unique equips to drop along with additional potentials it's still worrying that they'll make it back to the bosses much faster than anyone else, again possibly barring some very powerful parties being formed. This is especially true as most bosses have had their HP roughly doubled and Arkarium now actually drops Dominator Pendants at a low rate which I'm sure would be pretty tempting.