Over the past several years we have had a LOT of questions concerning sidewall damage. There is even a tag for it: sidewall-damage ... The thing about sidewall damage is, it depends on who you ask as to what kind of answer you'll get. Depending on who posts, the answers do not follow a logical continuance, meaning, or understanding from time to time. I believe, due to this, we are not giving consistent answers.
To that end, IMHO, in order for this subject to be considered non-opinion based, we need to find definitive advice from a tire manufacturer or some other credible source as to what is considered viable use case for sidewall damage.
If we cannot find definitive advice, I believe we need to place sidewall-damage questions as opinion based because we are not providing consistent answers.
Secondarily, it is also my opinion if we can find definitive advice, we need to consider closing these types of questions with a link back to a completed answer as a duplicate. This is because there's no real need to keep repeating the same advice over and over again. It just doesn't make sense, because in effect, they should be considered duplicates.
I believe there is something we need to discuss, so I'm leaving it up to you, the community, to let everyone know your thoughts on this, as well as to help provide/find definitive advice in this area. Give us your thoughts and ideas, as this subject is open for discussion.