I have consumed wines with her on several occasions, mostly in the 1990s in Aspen, CO and attended seminars in FL with her. She has never come off as a wine snob!

And while our Port palates are often contrary to one another, I have HUGE respect for her palate and brilliance and writing style.
While I believe that Michael Broadbent and Robert Parker are both better known worldwide, she is certainly in the top 5.
Her book on wine tasting, is not only easy to approach for beginners to MW level, but it holds up to the test of time. A fantastic read and the reason why I occasionally recommend it on wine forums and elsewhere.