Earlier quoted context omitted.
Subsidizing childcare is also "more money", but only for some workers. If the others don't notice or don't care that they're getting paid less for the same work that's great for the company. I am in favor of flexible work arrangements, and I have no idea if those have costs to the company, or how much more you'd need to pay the workers to accept the less flexible arrangements.
For the people that want the childcare, it’s better than more money, because it’s tax free
E.g. if the company were going to pay $2k extra but it would be taxed $1k, they would have to pay $3k to get the equivalent "happiness" boost. The employee gets $2k / year either way.
$2k tax free -> $2k in your pocket
$3k + $1k tax -> $2k in your pocket