Fun story; I wrote one about Ace Attorney, in relation to its premise of "If there's a mystery with a big reveal, we build it up and resolve it in one game before the credits roll." Instead, it made me realize I had a lot to say about Half-Life.

The series has built up a following around mysterious figures and theories. While the games themselves are fantastic, I should've had the confidence as a writer years ago to say no one, even at Valve, has any idea what's going on in their stories. They very likely have no specific, well-formed plans about answering "who is the G-man", and a certain dramatic event late in Episode 2 was very lazily shoe-horned to try to manufacture stakes, as made evident...

Half-Life: Alyx (VR game)

...from them using time travel to retcon that event

It's tricky because I still love HL2 for its good, snappy character writing, use of advanced facial tech, the way it never removes the player's presence for the sake of cutscenes, etc. But they likely shouldn't be used as reference for overall story direction.