Tbf for a static website without crazy levels of traffic, a weeks worth of groceries is probably more than hosting costs for a year.
'The bare minimum hosting cost' is a pretty poor bar for informational content.
I wonder what Sheldon would have wanted. I was always under the impression that he saw it as a community service. Despite working at a bike shop he never seemed to push parts sales in his writings.
I think its entirely possible to recover the costs of a hobby that does public good through donations. Making a reasonable wage (especially by software dev standards) is another matter entirely.