You’re absolutely right on one count - I was missing a zero (fixed). For that I apologize on behalf of their memory.
However, the Holocaust is the accepted term for the genocide against the Jewish people. It is not the only genocide the Nazis carried out, such as that against the Sinti and Roma, but it was the largest in scale by far. These are factual statements, agreed on by all experts.
For example, the Wikipedia article you cite reads:
While the term Holocaust generally refers to the systematic mass-murder of the Jewish people in German-occupied Europe, the Nazis also murdered a large number of non-Jewish people
I’m not sure how scholars calculate the number homosexual men who were killed, but I believe it does not include those who were killed because they were Jewish. It is apparently not well known how many lesbians or trans people were killed, although it is documented that they were sent to death camps.