I spent 20 years on a boat in the Ventura Harbor. Have never heard 1 person refer to Santa Ana’s as East Winds.
I knew a woman in Santa Paula who told me that when she was growing up there, everyone referred to the strong, dry winds that blew down the Santa Clara Valley as east winds, and they were unaware of the term "Santa Ana wind." However, she was born in 1916, so she may have been using the terminology of an earlier generation.