This argument would be a lot more convincing if you linked to issues or something.
The parent does not want (or claims) to produce a report on Kdenlive's reliability or lack thereof.
He merely comments on it. Those interested either already know (and agree or disagree) or can find out with a test run.
I can second the sentiment, I have had kdenlive crash on me several times without saving.
I still use it because it's great for quick and simple things, and I save frequently, but it is extremely frustrating when it happens.