In the 37 years I've been a practicing Wiccan, I have never heard anyone disparage Kitchen Witchery. I don't understand why someone would feel that it was something degrading or inappropriate.
On the other hand, remember that there is no such thing as the " Old Religion " as it pertains to Wicca. Wicca is a modern religion created by Gerald Gardner in the 1940's and made public in 1954 after the repeal of the anti-Witchcraft laws in England. Wicca may draw on older Pagan traditions, but the idea that it is ancient has long been disproven.
It is quite possible that village Wise Women and Cunning Men practiced something that could be considered kitchen witchery. They made do with what they had. None of the fancy tools that adorn our altars today. So they might brew up an herbal concoction on the same hearth where they cooked dinner, etc.
I think it is always good to also talk about what one means when they speak of " kitchen witchcraft ". To me, it is that sort of magical craft I do around the home with everyday things. As an example, while cooking dinner I might push some extra energy into having that food nourish our bodies and keep us healthy and strong. Or, while folding the laundry I raise some energy to put into the clothes for protection. If this is what people talk about when they say "kitchen witchery" why would one feel it is demeaning? Every Wiccan I personally know does the same sort of thing every day.
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