Anything using Blind as a "verified industry source" is going to be skewed to the type of person who uses Blind. Beyond that, it's low sample size, and there are suspiciously round fractions for some of the larger companies. Worse, because Blind is blind - this doesn't represent current employees, but merely people who worked at some point in the past at those companies.
Not saying it's not good - just saying not to get overly excited over a badly done survey