The short answer is yes. Buddhism has always been sexist.
But the core principles of Buddhism should prevent sexism or any kind of judgement based on forms and appearances. So are there just a bunch of people doing Buddhism really badly?
In Florence Caplow and Susan Moon’s carefully curated selection of Zen koans, The Hidden Lamp, Rita M Gross concisely outlines the prevalence of sexism and misogyny in traditional and contemporary Buddhism:
Vajrayana Buddhists in Tibet also believe, in common with many Asian Buddhists, that it is impossible to attain full enlightenment in a woman’s body and that being born female is unfortunate. That tells us a lot about what women have had to go through!