Part 6 in particular is a decent distillation of stuff to keep in mind that should apply across SSDs from multiple vendors. It would be nice to have benchmarks that validate the individual assertions, of course.

There's a lot of complexity going on behind the scenes of modern SSDs. Simplistic benchmarks as posted on most review sites often don't address real-world performance. The ones I pay most attention to are things like BootRacer; it's quite remarkable how often a drive will be slower at booting Windows than a competitor, even when it beats them in simple metrics like sequential / random reads / writes with different queue depths.

I can see the potential for firmware being optimized for modalities that crop up often in benchmarks but less often elsewhere: the aforementioned sequential / random reads and writes with different block sizes and queue depths. Doing well on benchmarks probably drives a bunch of sales. But detecting and switching modality may not be latency-free, and shortcuts taken to improve absolute performance in those modalities may harm global performance in a real-world IO mix.