You stop judging implementations that you haven't even made an effort to see.
I don't need to see it; you've already described it as a one-person (garbage) project.
Then you know very little about software development, my friend.
In my life I've made many one-person projects and those who paid me for them were never disappointed.
And unlike you, they weren't idiots.
Number of reviewers doesn't mean shit.
When it comes to 0 reviewers vs. decent number of reviewers, that's objectively false.
Obviously not always, as the event we're talking about clearly proves.
Code created entirely by one person has an advantage of that person understanding it better.
Which generally lowers a chance of that person making a mistake while changing it.