We may have to agree to disagree on the preference of the "average customer".
No problem for me, I am just quoting the outcome of marketing research from a previous company I worked for.
There are always people with other tastes.
Statistics 101 , a single sample/customer does not significantly change the outcome of the average if the sample size was big enough.
Second colour temperature
oK says nothing about Lumens. Yes the higher the colourtemperature and fixed Wattage the Lumens will increase but increasing Wattage also increases Lumens.
Mistake nr1 is to place warm white yellowish light but too low Wattage, you are then comparing apples with pears (dutch expression in english probably some other fruit is applicable).
My advice is to place a dimmable Led fixture with enough Lumens and use it at the appropriate levels. You can cut your food excellent with enough Lumens to have good contrast. You don't need 4000K for that. For pro kitchens and workareas 4000K is preferred because it keeps the concentration higher due to the more blueish component in the light where humans have a weakness for. (simply said: reddish/yellowish light people think it is the end of day and go to sleep mode, blueish light people wake up and have better concentration. This is also scientificly proofed and tested and applied in schools and hospitals BTW so don't think I am making this up).
Besides there are many functions in the kitchen, many people besides cooking eat their meal in their kitchen and there is this show/display function.
I am not sure how many people like to enjoy their dinner with 5000K lighting , even worse MacDonald and other fastfood restaurants have used this cold light to make sure customers don't spent too much time there