Blah Blah Blah.....
The drivers are fine as long as you get the most up-to-date ones that are available.
In and of themselves, there is nothing wrong with sound card DACs.
One of the nicest things about the idea is that it is generic! If you don't like the performance of one particular sound device, get another one. There are many to chose from.
If your software doesn't work well with them, then you should fix your software.
You can say whatever you want about sound card DACs but there is one reality. Their existence has set a very low price point for laser control DACs in general.
Anyone who develops a new laser DAC and does any amount of market research will soon find out that they need to price their DAC to be competitive with the sound card DAC idea in both price and performance. 8 channels of 16 bit DAC at 48K (at least) is pretty hard to beat.
So does Spaghetti still support the sound card DAC? It did! If it doesn't anymore that was YOUR choice!
James.