Welcome to the forums.
If you were able to rip the contents of the discs successfully, then yes, the data will be intact. If you find a disc that cannot be ripped, I would suggest trying a program called ISOBuster to get the material to the hard drive. It works in a different method than most ripping software and can sometimes retrieve material where nothing else worked.
Also, optical drives vary in their ability to read poor discs. If you find one that is a problem and the Pioneer fails, it sometimes helps to use a different type of drive. I have an old LG Blu-ray drive that is good at this, and many use Lite-on drives in this type of endeavor.
If you want to make quality scans, not just the regular type of scan, you would probably need a Lite-on drive, though there may be a few others still on the market that have Mediatek chips that can do this. I haven't been keeping up with the drives for many years now. Many of our other members, like Ibex and Albert to name a couple, know more than me about scanning, especially cd's, since I was never a heavy user of cd's.
Again, welcome to the forums. As you may have noticed, we are changing forum software, so this thread and your posts may not be retained once we shift over to the new look. You may wind up starting all over on your post count here.