What if you would have just left the topic as it was, though? IMO at the very least it becomes a little questionable if thread topic's become editorialized by someone other than the thread starter, that is tantamount to putting words in their mouth.
The conversation is there for all to follow, the resolution can be presented at the end of conversation as in any thread. Why the particular need to keep editing thread titles critical of Tesla? It surely doesn't happen as much on other types of threads (other than threads with unofficial information demeed potentially harmful of Tesla, where question marks and rumour/theory labels appear by moderators - another such example).
This will be my last reply to you on this but the first edit still had the word 'defective' in it. That means broken and something that is not good. The 'not fixable' was proven to be factually incorrect (it was fixed if you read the thread) so it was changed to reflect that. The reason why some titles are changed has been explained multiple times so read those replies please.