This is one of the points he was right on though
Only if you ignore the context in which he mentioned the point in:
He has clearly watched Hbombereguy's video on the topic: Hbomberguy explains how outside of random encounters, when you interact with humans, every player's first experience will likely be non-violent:
When you reach the end of the Temple of Trials you're told you must fight Cameron to prove you're martial prowess, if you ask why you must fight him he'll tell you that you will inherently come across a situation whereby you must be prepared to respond with violence to another human being. With a high enough Speech skill you can say "I disagree, I think a non-violent resolution can be found for every conflict" to which he'll respect that. This subtley reinforces to high-speech characters that violence is avoidable and a last resort.
The first human antagonists your likely to come across in Fallout 1 are the Khans, who don't attack you on sight but rather can be dealt with in a variety of ways: Speech checks, being given money for Tandi's release, a high enough luck skill and leather jacket meaning you're mistaken for Garl Deathhand's father, ect.
When Hbomberguy mentions the Vault 101 Sequence, he doesn't say violence is literally not an option, he says that the way the game is designed is to encourage mindless violence against ordinary people: these are the same Vault Security Guards who 5 minutes earlier were at your Birthday Party, and unless killed by Radroaches, they will immediately go hostile on you with no alternative, and will chase you to the end of the Vault, and that given that you're stuck in a corridor with them, there is
effectively no choice but to kill them, not
literally no choice but to kill them. The game is designed for you to see them as mindless goons as soon as possible.
The fact that it's not a mandatory objective to kill them doesn't take away from the fact that the game conditions you in to thinking there is no peaceful resolution. MATN's point only makes sense if you ignore any surrounding context or nuanced points that Hbomb was making.
Literally avoiding the entire way the game was designed to go for a non-violent route isn't proof that the game included a non-violent option. It's proof that you can cheese the game in such a way to make it possible.