It's just too tailored to console controls to accommodate for interesting dialog trees. Dialogue options being summarized in a bad or misleading way is just one issue.

The summarizing issue is real, but I don't think that that's a requirement of optimizing for console controls (like, one face button per option). Most traditional dialog option trees in Fallout had four or fewer options, and for the few cases where that isn't true, it's not like console games haven't had to figure out how to choose from more than four choices. It'd be possible to make a game that works fine on consoles and exposes more dialog choices.

I mean, hell, the XDR mod I mentioned above does do that for Fallout 4.

I think that the Fallout 4 designers were just trying to avoid making a player sit on a wiki at each speech choice, worried that they might make the wrong speech choice, as a lot of New Vegas choices have implications for how the game plays out.

I think that (a) many players are fine with that, and (b) for those who aren't, they could have had some kind of option to enable hints or something as to long-term effects of decisions.

Btw, if you like settlement building and spend a lot of time there, I highly recommend a mod called Icebreaker. It adds a ton of voice lines to your settlers, so it's not the same line over and over again.

Cool, thanks. Yeah, more dialog recordings is something that I think that the whole series could benefit from. "Patrolling the Mojave almost makes you wish for a nuclear winter" got kind of old in New Vegas. And now we've got LLM speech synthesis, which isn't perfect, but is probably good enough to go back in older games and expand the spoken repertoire of characters.