If a video editing software crashing on occasion was ground for concern, no one would use Adobe Premiere anymore

Haven‘t used openshot or shotcut but I have tried kdenlive and I found it to be perfectly adequate with a fairly nice and user friendly interface. What makes you unsure about it?

It could. It might not. But it’s intel so the probability they’ve actually locked it down is higher than with AMD. But hardware is often more capable than what the specs say. That’s why overclocking is a thing or, in the past, you could unlock an extra core on some processors. It’s just never a guarantee and can vary from part to part, even if it’s the same model.