It absolutely is that bad. There’s no reason a credit card payment done at 11am on Monday doesn’t take money from my account until Wednesday when I could just go to Target and have money come out instantly buying something stupid I probably don’t need.
It may be slightly vendor dependent, my rent is usually maybe a day or so faster depending on when I do it, but again, no reason it shouldn’t be instant. (Yes I couldn’t use my debit card but I’m not paying 5% oR so surcharge for that)