Why do people feel the need to add qualifiers like "I’m a pretty hardcore SpaceX fan but...". Are you so attached to some company that it was hard for you to congratulate people on an accomplishment? It seems strange.
"I'm somewhat biased against BlueOrigin, but BlueOrigin managed to overcome my personal bias with how impressive their launch was".
It's similar to saying "I normally don't like country music, but that was a good song". In that sentence the intended message isn't "I don't like country music", instead it's "I liked that song"
Whenever it's used, it applies to the comment using it as well as the comment it's referring to.
P.S. Wait a second, why do I care about why do you care? Oh god...