I disagree with pretty much all of that, actually. Modern archeology is only just in the process of pulling itself out of hundreds of years of racism, bias, colonialism, disproven assumptions, widespread graverobbing, and massive, blatant pseudoscience; many ideas and publications in the field that older than about 20 years are of highly questionable provenance.
I personally am much more convinced and compelled by newer theories that, if any piece of technology made us human, it was not the weapon - it was the carrier bag, the story, and/or fire. (But not fire with the primary purpose of violence, mind you - fire with the primary purpose of heat and food and sanitation)
If you haven't got something to put it in, food will escape you-
even something as uncombative and unresourceful as an oat. You
put as many as you can into your stomach while they are handy, that
being the primary container; but what about tomorrow morning
when you wake up and it's cold and raining and wouldn't it be good
to have just a few handfuls of oats to chew on and give little Oom to
make her shut up, but how do you get more than one stomachful
and one handful home? So you get up and go to the damned soggy
oat patch in the rain, and wouldn't it be a good thing if you had
something to put Baby Oo Oo in so that you could pick the oats with
both hands? A leaf a gourd a shell a net a bag a sling a sack a bottle a pot a box a container. A holder. A recipient.
The first cultural device was probably a recipient. . . . Many
theorizers feel that the earliest cultural inventions must have
been a container to hold gathered products and some kind of
sling or net carrier.
So says Elizabeth Fisher in Women's Creation (McGraw-Hill, 1975).
But no, this cannot be. Where is that wonderful, big, long, hard thing, a bone, I believe, that the Ape Man first bashed somebody
with in the movie and then, grunting with ecstasy at having
achieved the first proper murder, flung up into the sky...? I don't know. I don 't even care. I'm not telling that story. We've heard it, we've all heard all about all the sticks and spears and swords, the things to bash and poke and hit with, the long, hard things, but we have not heard about the thing to put things in, the container for the thing contained. That is a new story. That is news...
It sometimes seems that that story is approaching its end. Lest
there be no more telling of stories at all , some of us out here in the
wild oats, amid the alien corn, think we'd better start telling another
one, which maybe people can go on with when the old one's fin-
ished. Maybe. The trouble is , we've all let ourselves become part of
the killer story, and so we may get finished along with it. Hence it is
with a certain feeling of urgency that I seek the nature, subject,
words of the other story, the untold one, the life story.
-via Ursula K. Le Guin, The Carrier Bag Theory of Fiction. Originally published 1986, new edition with forewords and commentaries published 2024.