Does the 'Buck' Start with the DAC?

Some members have expressed that the server / streaming front end is less important than the DAC.

I subscribe to the position that "Everything Matters"

As I consider front end choices, I'm trying to gauge if I should be leaning more heavily on a DAC versus a SOURCE (server / streamer).

Feedback and perspective from both camps, or any others, will be helpful. Thank you.

Please Note:  I'm not looking for validation of the position that "only the bits" matter... I accept that some believe this wholeheartedly... and that's okay by me.