Firstly the most critical part of competing with WP is not the technology, it's having the critical mass of people willing to write article. Scandals aside over decades hundreds of thousands of people have built out the content and continue to do so - that is not easy to emulate.
Also for all the scandals, the toughest problems in WP early days were spammers and trolls. Moderation is a niche community problem (which till you have a community is moot). Stopping bot armies and countless trolls is a day 1 issue.