I too have been following this thread and the general disc buring failure problem for a very very long time. I would ask anyone if the burning problems started occuring after an OS update - especially an EFI update?
The bottomline is, and I'm sorry for not giving any direct advice to solving the burning problem, is that disc media is being phased out. Period. It's better to migrate to a new means of sharing your media.
My cynical last comment is that you would no more think of storing your data on a VHS or 8-Track. Disc based data storage is dead (arguablly for a few years already) and we all have to graduate to a new form of storage.
My advice is that one can't expect older technology to continue to function as it did when it was cutting edge. I agree that companies have an obligation to fullfil their product's longevity of function. the cold fact is that disc buring is no longer supported. It has reached the end of it's productivity and we are all better off devoting our cash to investing in better personal solutions.
Upload your photos (or other data) to cloud based storage. There are many many options here, and a lot of them are free (to a certain capacity). Your data is usually replicated over several redunant drives to ensure it's security. What's more is that in this way your data is safe guarded better than on a disc, or on a back-up drive at home or work. It also facilitates cross user access so that very large files can be accessed where the content is needed.
Another benefit is that it becomes eaier to publish this content to different platforms from a single repository making it available to whichever device you like.
The last and perhaps the best feature is that you can also have version history so you can always maintain the original yet have subsequent modifications all the while being able to return to the original.
These points argue the case to migrate away from disc based media and to not invest anymore time or money to find a solution to a problem (disc burning) that has no solution.
Sorry that I can't tell you to just repair your disc permissions and everything will be hunky-dory...