Re: QLC? It's not the one for me
I would say it's less about familiarity and more about cost. HDD is still cheap enough (relatively) that you can have multiple copies for the price of one piece of replacement SDD media.
Tech continues to improve on both fronts. I can almost put my entire hoard on a single piece of spinning rust now. I don't even want to contemplate the cost of duplicating all of my data with SSD.
Other entities have WAY more data than I do.