Is Coffeelock actually a build worth looking into?

For those that dont know what coffeelock is: What Exactly is the “Coffeelock” Infinite Spellslots Build?

The Coffeelock build technically works within the rules as written, but how viable is it in actual gameplay? Have players successfully used it in campaigns, and how did it affect the dynamic with the DM and other players? I'm curious about practical experiences, potential challenges, and whether this build brings more fun or frustration to the table.