Facts are: There was nothing wrong with the phones themselves, except the batteries. Samsung first had the problem that some batteries were physically larger than they should have been, which _will_ cause problems. Then they had a second problem, that in order to fix the first problem, they rushed other suppliers to deliver high capacity batteries before they were properly designed. Lots of the damage to the brand was caused by the fact that they first had a problem, said it was fixed, and then had the exact same problem again because they rushed for a solution.
It seems that trying to fit in that extra high capacity (3,500mAh) was difficult. Too difficult, it turns out. Same battery with lower capacity (3,000mAh) should be much easier to build without any safety problems. I'm personally not in the market for a Samsung phone, but if let's say Apple offered "iPhone 7 with 2 hours less battery for $300 less", I'd be quite interested.
Anyone who wants to buy Android, I'd recommend looking at the price, and checking what you get for it. If it's better than another phone for the same price apart from lower battery life, you just decide what you want more (features, speed etc. vs. battery life) and buy it or don't. Emotionally, the brand is damaged. Rationally, I would think that these phones will be absolutely fine.