It is, and I struggle to understand how a person's heart can become so hard that they can do that.
I understand the need for detachment in combat and in strategy/weapons design, that in combat it can be necessary to see targets not people otherwise you hesitate too much and get yourself and your colleagues killed. But this is more than that. People I worked with were able and willing to switch in and out of that state of mind, and it was a professional, almost clinical state of mind. They maintained empathy and compassion, reflected on what they were doing, and it wasn't fun. It was work, a duty, a professional obligation to keep others safe. They took no pleasure in it.
This is different. The footage coming out is showing a casual disregard for life, because those lives don't really matter to the people ending them. There's footage of cheering, gratuitous violence and signs/admissions of torture, etc. The footage above looks orderly in a way that really suggests it's far from the first time that's happened. For that, I look at the wider culture within the IDF, the education system, societal factors (eg the influence of the far-right in government), etc and see a lot of things which could contribute.