It looks like you only have one point light. Those props are most likely physics props, or at least they are supposed to be, so its not a lightmap baking problem. The game itself uses named lights to turn them on and off. The original Half-Life created by Valve was a revolutionary game when it first came out in 1998. The Gargantuas werent immune to explosive weapons in the first game, but the mod now grants them invincibility to all attacks outside of scripted events. You can absolutely name lights in Black Mesa and it works no differently than it does in HL2. The Vortigaunts at Black Mesa East appear to do a lot of the work around the place.
Black Mesa is a first-person shooter, a 3rd party remake of the original Half Life (Created by Valve), this video game was developed and published by Crowbar Collective then finally released on March 6th, 2020. Its not Black Mesa, but its served us well enough.
