I have no doubt the info you present here is accurate; no doubt at all. I think what is debatable, though, is how much of a life-shortening impact, realistically, defragmenting a solid-state drive will have on it if, for example, it is lumped in along with traditional drive(s) during a defrag/optim session.
In my case, back in 2009 I purchased a 320 GB hp SimpleSave external (USB) drive to use as a clone backup to my (also 320 GB) internal C: drive. I still have it and still use it, but while I did use it for its stated purpose at first, it is now connected to my current system as "just another drive", having taken it apart and removed the little "CD controller" board, which effectively "unlocks" it and renders it a "normal" HDD, albeit an external one.
To get back on track… I essentially treat it the same as the two other HDDs on this system, meaning it gets included whenever I do a defragmentation/optimization, and it still works perfectly. In fact, this particular product seems to be of really great quality, as it's never developped even a single bad sector all the time I've had it.
This is just to say that some things are true on paper, but have negligible effect in real life. That said, I recognize that I may have just lucked out with this particular product, and that my experience doesn't represent the average, typical one a user will have with these kinds of products.