There's an ever-growing grey zone between clearly predatory and legit publishers/ journals. The still exploding number of MDPI journals belong to the shady bunch. Why else would they ask a science drop-out to join the editorial board of Life – the life science journal?
In 2015, somebody on ResearchGate posted the following question: “What's the difference between neighbor joining, maximum likelihood, maximum parsimony, and Bayesian inference?” Many answered, a few were ok but a lot repeated common misconceptions. A necessary correction and some further remarks.