Yes, I agree that its very very hard to hold the peg, if people can just arb the interest difference between sDAI and GHO borrowing rate and thereby generating GHO sell pressure. Hence, the adjustment makes sense to me and reflects the sentiment in this thread: [TEMP CHECK] Community Plan for GHO Stability and Peg - #9 by 0xSpartan.
Even after this rate increase, it will be hard enough to hold the peg, given that people will use the discounted rate to arb. Let’s see. But its definitively the right direction to regain the peg.