If you are running the government or a hospital then 30% more patients could be absolutely catastrophic.
That's not what the stat means, though - and this is perhaps a good reason why using it is problmeatic. I.e., it's not an increase in 30% more patients. It's an increase in fatalities of those who have caught the virus (again, a fraction of percent). The vast majority of these deaths would, I expect, be amongst people who were already in the hospital. That doesn't mean it's not a worrying statistic if true.
Having said that, the new variant has resulted in more hospitalizations due to the increase in transmissions, it would appear. We've known this since (at least) December, however.