There’s always outliers, and I wasn’t saying buggy games don’t exist, one merely has to point to the speedrunning community for that, but most games if they wanted to sell decent had to pass word-of-mouth sales and for that they had to be at the very least passable as “playable” most of the time.
And one has to admit those were days of everyone experimenting on scarce information as well, so many guidelines and strategies/philosophies are available now to prevent a lot of major oversights that still occur in a number of games these days. Some of which bring shame to even the worst offenders of back in the day. And those old games generally fell into obscurity for a reason if they weren’t known.
As for dlc we had the occasional trick or expansion pack companies used but in buying a decently known game you were somewhat aware of what to expect, nowadays you had companies like EA that felt known for buggy releases and bad QA however…
Mind you I’m not trying to place vermintide in that list but fact of the matter is a lot of straight-off-the-bat bugs were game breaking in multiple ways. A number of them prevented player progression, meant certain doom or sudden death, and then there’s the issue where internally an entirely different balancing was used than players were using. Resulting in a lot squishier game than was intended.