Lots of competitive games still have LAN options because they're basically required for reliable in-person tournaments. I'm familiar mostly with Nintendo games

Lots of competitive games still have LAN options because they're basically required for reliable in-person tournaments. I'm familiar mostly with Nintendo games like Smash, Splatoon 3 and Mario Kart but even very modern games like Valorant have the technical ability to run LAN servers (even if the game's publishers keep the actual LAN servers closely guarded and only use them for large in-person events). And of course CS and LoL and similar have LAN modes