From a quick skim of that response, it reads to me like Walker admits to and agrees with at least some of the criticism.
But it also looks like he ignores some of the more damning accusations, like cutting out parts of graphs that don't support his theories, being incorrect that the WHO has declared that we have a "sleep loss epidemic", and questions about where he actually earned his PhD (which he seems to continually misrepresent).
So yes, he seems to have responded to the criticism, but IMO not really addressed it to a satisfying degree.
It's also possible that someone who lies 99% of the time has something really important to say with the other 1% (if you can even separate it from the 99%), but I wouldn't consider that person trustworthy or even worth dealing with.
Not saying that perfectly describes Walker, but the evidence does seem to point in that direction.
If you still want to trust someone like that, I guess that's your prerogative, but... well, that sort of thing doesn't seem like a winning strategy in life.
IMO he has mostly satisfying answers. He agrees with some minor points and he doesn't address important stuff like cutting out parts of graphs, but I don't think the criticism is strong enough to conclude that the book is "riddled with scientific and factual errors".
You beat me by 1 minute! 5x5 is an excellent starter program. I've lifted for about 10 years and while I'm more in the advanced and intermediate lifting programs, 5x5 is my goto when I have a long hiatus in lifting. I'm definitely doing it once the COVID lockdowns are over.
Seems like this requires both physical space and equipment. Being stuck at home right now, what would be good enough alternatives for the exercises other than squats (perhaps with smaller dumbbells or with body weight)?
That helped me a lot. I kept trying to sign up on the wrong page and kept saying every code I was using was invalid. I was getting incredibly irritated!
Except that all the forms listed there actually mean something and could be used in everyday conversations (some of them are pretty rare, of course). In English those would be communicated by a lot of prepositions. Take "kauppoinennekaan" [1], that would roughly mean "not even with your (plural) shops".
[1] Dashes are on the page for clarity, they're not part of Finnish language
I found the general user experience more pleasant and Alfred easier to configure for my needs. QS did (and probably still does) a good job, but I wouldn't switch back anymore.