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.

So my son and I have used Kdenlive quite a bit and we've never had it crash. That's why I was asking for specifics: it would be interesting to know what circumstances lead to crashes, even if it's just a hunch.