The tennis community is just protecting the golden goose. The coaching was so egregious it forced Ramos' hand, he clearly saw it, and it was right there on camera. If he doesn't call it he gets the film thrown in his face, he's open to criticism of blatantly favoring Serena, aiding and abetting a coach trying to get his player back in a match where she is being mauled. The coach admits freely that he was trying to coach, desperate to get his player to make adjustments. They were going to ask him that question whatever the outcome. So no call, and the sport looks rigged. Ramo's known as a stickler, he's not a soft warning kind of guy, from what I understand. But forget all that, it's not relevant.
He made the call. What is relevant is what happened afterwards. Navratilova makes a good point on this. After the 1st call, SW was satisfied with the interaction, seemingly understood the penalty, wasn't happy about it, but accepted it and moved on. She continued to play the match. Then she loses her momentum, frustrated at having been broken, throwing in 2 DFs, knew she was getting outplayed and had no answers, loses her cool, acts badly, bashes her racket, at this point, again Ramos hand is forced. Point penalty. She seriously seemed taken by surprise at this juncture. Did she not think she would get a point penalty? Then she just launches into ad hominem attacks and acts like a victim, going back to the earlier issue that had already been settled--so at this point she is verbally abusing the umpire, because she's no longer arguing the call in question. What is she arguing for at that point?