My understand is text should be left-aligned; dates, times, and numbers should be right-aligned; images should be centered.
What about Boolean strings "Yes"/"No"? My hunch says to center them.
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Depending on the context, you can also display boolean values with checkboxes (for editable scenarios) or tick / cross icons.
I don't find any reason to align "Yes/ No" to right or center just because are booleans.
The numbers are right-aligned to help the reader make easier comparisons of magnitude when scanning down columns.
If this column is important, you can use tags for yes/ no to highlight the info, with different background and the text-centered.