Probability of acceptance when editor requests "major revisions" but one reviewer recommended "full rejection"
I have successfully revised a paper with a reject from one reviewer, through a major revision, into an accepted article. It is definitely possible. I would write your best revision and include a very strongly (but politely and professionally) constructed and worded cover letter directly addressing the reviewer's points including the fact that using blog posts as counter evidence is outside the norms of the field. If the reviewer can point to peer-reviewed academic publications that support their negative points, then that might be sufficient evidence to reject the article, but otherwise, that evidence isn't very strong.