Ripley knew more about what the xeno does, if you consider the extended version, where it shows the xeno crafting eggs out of dead bodies in Alien. Newt got to study them for a few weeks (god knows what she saw) and Burke might be the only one that had non filtered information about them.
Based on Burke, I almost wonder if the company used like psychological profiles (or some kind of other means, like getting the marines really drunk before deployment) to try to put together a marine squad that was learning averse or something, IIRC they pretty much refused to listen to her personal report in the briefing and its unknown what was in or if they even bothered to listen to (I guess its a video?) of what Ripley had to say in her deposition. Alien 3 kind of tells us that the company might have been behind the attempt to capture them, and that it was not just a mad get rich plan Burke came up with on the spot. Every movie after that featured mr weyland seemed to show him pulling tons of strings and being deeply involved in conspiracies.
IIRC Burke kinda shushed her and told them to watch the video or something? I feel like behind the scenes he was telling them something along the lines of "she is some crazy woman that's under investigation don't let her put any crazy ideas in your head you don't want to be involved in the subsequent hearings, face court marital for being an accessory, etc"
But I also did not take too much weight in the dialog after the survival situation started, because they were sleep deprived, adrenaline filled, injured, and probobly had severe tinnitus. It made me feel that Burke had to have been coached on the possible situations by someone, because he still maintained a shit load of composure all things considered, most uh... c-level execs would be hiding under the table as soon a 1 bullet was fired. Or he had previous experience working for military intelligence or something, like a crooked military spy. Like, psychological training on dealing with trauma victims too, he convinced her to go again.. thats like a skill set a military interrogator has... so if you consider the whole universe and games and everything, I think Weyland hired some PMC to impersonate a corporate officer.