Going to have to disagree: cold brew made by hot coffee is generally bad.
I put coarse ground beans into a French press and then drink it the next day (18 hours later). It's the laziest method. You just make tomorrow's coffee when you are done with today's.
How is iced coffee bad? If done right it is just normal coffee but cold. On the other hand, cold brew almost always has a slight stale oil taste which I can't stand.
Obviously a matter of opinion. Or maybe method. My coffee does not have a stale oil taste. But coffee brewed hot and then iced, for me, it accentuates the bitter.