Did you read the description of this fund? Did you stop to consider that with safe T-bills paying 5.5%, and this fund paying 7.5%, there must be MORE RISK in it?
The risk is that the companies could default in a recession and stop paying interest, and the risk is that rates could rise and the share price of the fund could drop, until older investments mature and it can buy new, higher-yielding rate notes. The real risk is rising rates, not falling rates.
Yes, the risk is mitigated somewhat by the “floating rate” aspect, but still there is more risk here than in T-bills, where your only risk is that when they mature in 6 months, rates might be lower.