

I think his is underestimating how big HL3 is as a part of gaming culture. Half Life really wasn’t part of my generation, but I grew up with HL3 being memed constantly. The constant fake leaks and rumors have kept the idea alive. Just a couple months ago I saw a lot of people genuinely believe it was going to be announced during The Gaming Awards thanks to a leak that Valve would be present. Every gaming event has chat full of people spamming Half Life 3 memes. Plus, Alyx got a lot of younger gamers to play the series.
If Half-Life 3 were actually announced the hype would 100% be there, even if most of it will be from people who had never played the games.
Its main goal is to be a frontend for Epic, GOG, and Amazon games. It does also support manually adding games, so you can use it similarly to Lutris if you’d like. They support most of the same features, so its just preference.