He turns his personal flaws into a collective bias. His first paragraph tries to shift responsibility from the individual to a larger category of people.
> "...the negative impact of my tweets was amplified by the fact that I, a white, Western, male CEO of a key company in the Maker community, publicly questioned a young, female, self-employed Chinese maker."
He's not trying to make the whole group responsible for his mistake, he is trying to highlight that white western males are powerful over marginalized groups and hold unconscious biases both collectively and individually. When someone with large white western male following sends racist/misogynist/whateverist signals, those signals are easily amplified and overpowering to whatever marginalized person/group is on the receiving end. So no, the entire group did not make that mistake. But it is every group members responsibility to understand these power dynamics and educate/change both themselves and their peers to not abuse this power be it on purpose or unconsciously.
When a member of the group looks at a situation like this they need to reflect on if they are guilty at all and (regardless of if they are) how they can help change the culture. Your comment on "shifting responsibility" is not productive in that regard and only comes off as defensive. Not trying to say you're a white western dude possibly guilty of abusing power dynamics over marginalized groups, but something to keep in mind.
Also read this[0] blog, much more eloquent and detailed than my response here.
> "...the negative impact of my tweets was amplified by the fact that I, a white, Western, male CEO of a key company in the Maker community, publicly questioned a young, female, self-employed Chinese maker."