Kdenlive has improved remarkably over the last few years and in many ways not in a way you'd visibly notice, they had a period where it was very unstable/crash prone so they spent a good chunk of time really focusing just on that and as a result it's now incredibly stable, I can't remember the last time it crashed.

For basic video editing it's quite user friendly and you can do some fairly prosumer level things with it (it's not going to match a studio grade NLE but for most people it doesn't need to).

This does not answer my question, I need something that can do thing, not how it is licensed. I have used Kdenlive, and it's nowhere near either of these functionality-wise, and struggles with big files.