That's just like, your opinion, ma'am.
Who cares whether we accept trans women as women? The first place finisher followed the rules in the state of California and even shared the first place spot on the podium with the second finisher. That takes humility and grace, two things that most posters here, me included, won''t accomplish in their lifetime. The shade thrown at the first place finisher is completely unnecessary.
That said, if you are born male, you have an advantage in most sports. That's also irrelevant. Because if you are born male and grown up to becsix feet tall, you will have an advantage in the dating market and many other areas of life. If you are born male and live in East Africa, you will have an advantage in long distance running. The question here is "Is transitioning a choice or are you just being who you are?" I think it's the latter. Reasonable people can disagree.
Before he died, Scott Adams had a really interesting hot take on "men in women's sports." He pointed out that gender classification in sports is fundamentally political. The reason we have male and female categories at all is so that we can reward female excellence; if we wanted to reward excellence in the purist sense, we would simply recognize the best competitors, and far fewer women would appear on podiums and, by extension, play sports at all. Ever the Solomon, Adams said that the issue should be resolved by letting the women who compete have final say on norms of fairness. Since we don't have any complaints from the other competitors in this particular competition, you can make it he argument that the completion was fair.