Drink the Kool-Aid [v.]

To fully buy into an idea or strategy without questioning it, often to a fault. The phrase implies blind loyalty or uncritical enthusiasm.

…obviously, I am the CEO, I drink the Kool-Aid. But I look at this as very similar to the Skyborg program.

Eric DeMarco, President & CEO
Kratos Defense & Security Solutions, Inc.
Q1 2023 earnings call

He got to drink the Kool-Aid. So, our friend Jimmy did not really drink the Kool-Aid, so we decided to retire and went to work for GLS. So, now we have a new crew. So, Mike Hover… is in charge, and he’s drinking the Kool-Aid of that new plan of, again, being more picky on the freight.

Alain Bédard, Chairman, President, & CEO
TFI International Inc.
Q1 2024 earnings call