Morality Values Are Subjective But Application is Objective?

"Morality is situational."

"We have moral worth to ourselves, that's what matters."

"The foundation of morality is individual and subjective and based on maximizing well-being,"

"Once we care about our well-being as a society, we can make non-subjective assessments of the consequences of our actions to maximize well-being."

The above are quotes by Matt Dillahunty challenging Christian arguments that morality is objective and comes from a God. Below is a 20-min video presenting his counter-argument:

https://www.youtube.com/watch?v=hob11SYaPoo