I have four of the 6 ton recall stands. I've used them a few times, including my '72 F-250. I need to dig them out, inspect them, and decide what to do. There's not really anything I want at HF these days, and I certainly wouldn't get more jack stands! I always throw a couple tires under there, and keep the jack in place, so I'm not going to get squished.
I wouldn't worry about getting replacement stands from HF (I would eyeball them though - from now on I'll eyeball
any jack-stand before I use it), but whatever - there's plenty of very nice stuff at HF these days.
I'm not saying this wasn't an egregious failing for HF and their supplier, but it's a tiny fraction of what they've sold over their many years and as best I can tell they're doing this proactively - i.e. it doesn't sound like it took someone getting hurt/dying for them to act.
I have a set gray HF 3-ton jack stands that aren't in the recall, and I trust them as much as any jack stands of that design. The thing is I don't trust that design much at all - I hate jack stands in general for the multitude of opportunities for bad things to happen. I went to a QuickJack for most of what will ever take me under a car, and it's fantastic. Not cheap, and a 2-post lift would be far better but I'm both budget and pad limited, so no 2-post (a 4-post would work on my pad, but too much $$ to have workable access to wheels, etc.).
If I ever decide to replace the HF stands, I'll probably go Esco for their safer and more stable design.
Funny, as dangerous as concrete blocks are, I've used them my whole like, and never had a failure. I do use them in the proper orientation, with a block of wood on top.
I have - a guy in my car-community died. The jack and the tires mainly helped enable an open casket. He was unlucky in a couple ways, but I call myself "the Master of Realized Unlikelihoods"- no chance in hell I'm trusting concrete blocks unless it's a real-world emergency.