Given the title, it's reasonable to assume that it's saying that suppressing right leaning people is good and needs to go further. This theory is further supported by the context, i.e. other statements by Mozilla as an organization, and it's leader in particular.
I agree with the implication of the title. The article is also anti-Trump, though anti-Trump != anti-right.
Although Mozilla does take an ideological position on some issues, I have not yet seen any mechanisms within the browser that favor one side of the partisan divide, intentionally or practically. I can't say it'll never happen, but Mozilla has been even-handed so far, and I'm sure there's not a lot of appetite to piss off any large contingents.
