Even saying "we're working on it due to the large amount of feedback about it, but no promises" would be better than silence imo.
Swen said that already re: Reactions in a prior PFH and everyone took it and ASSUMED that Larian was going to eventually deliver Solasta-like reaction system. Notice on this recent PFH, he was much more careful about the topic of Reactions and glossed right over giving another update and/or promise that the final system would look different than what we saw.
Honestly, some of the questions people are clamoring about actually have been answered somewhere. You're not getting a party of 6, RTWP, or a day/night cycle.
There's no benefit to them saying anything else. They can't stay in EA forever and Larian has a history of biting off more than they can chew with overpromising and underdelivering.
The problem is that we haven't been told that the current reaction system IS the final one. If Swen came out and said that reactions won't change anymore (instead of very obviously avoiding any mention of reactions, which looks a bit guilty and cowardly), then sure we'd be mad, but no more mad than we'll be at full release if its still in this state. However, if there are still planned updates to the reaction system, then mentioning in the PfH they're still being worked on would make a lot of people happier.
I'll concede RTWP (noting that RTWP is rarely mentioned nowadays), but actually day/night cycle is an example that shows the potential usefulness of Larian saying they won't do X and why. Larian has gone on record that they won't do a complicated time progression system where time actually passes incrementally as you play, along with a complex NPC routines that change realistically with said time. Also partially because it wouldn't work for multiplayer; players could proceed at different speeds depending on whether they were in TB or not.
To which we can (and frequently have), as a community, respond: Hey Larian, none of those things you mentioned are important. You don't have to do this super complicated thing and make a 100% accurate time passage system. Instantly turning from day-to-night after e.g., 2 short rests or a dedicated "wait for night" button would be perfectly fine. And just tie everyone's time to the slowest player, so what if it's a bit inaccurate? And this is useful feedback for Larian to have.