gonna be brutal here, but both of those comments are just excuses.
From the video you are clearly trying to remain as upright as possible, this is compromising your lumbar region when you get to the bottom of the lift because of the low bar position on your back.
Hip hingeing is easy to learn, you can deadlift with resonable form and you hip hinge while deadlifting so its just gumpf that you cant hip hinge.
You need to keep in your head that your back must be straight, on your previous video i pointed out where you were already compromising your lift before starting the movement. In this video your are doing the same but not until you are 3/4 of the way in to the hole. This is an improvement but continuing to add weight could bring back a return of your back issues.
As ice has said you need to stick your butt out more when doing low bar squat, it is hard to learn without direct tuition but i am sure you can pick it up.
The alternative is to highbar squat, as it is most likely that your back will not become compromised due to the bar position and you trying fight the position your body natually wants to be in.
Mate, be brutal as you want!!!
I'm not
trying to remain upright, it's just how that set went, I was told not to tilt my hips, so I didn't and that's what happened

but saying it's compromising my lumbar position what do you mean? My lower back isn't bending? Or atleast not half as much as shown
here
Right okay, I can see what you mean now then with the hip hinging. I'm guessing it's just due to the extra weight on my back that makes me keep more upright (through fear of breaking again no doubt) I find that if I was to hi hinge as you say with the weight on my back, my bum will tuck, it's something I will have to try and just compare videos of different motions. What I'm saying is, I may be able to hip hinge on a deadlift, but I can't get it right on a squat for whatever reason.
In this video your are doing the same but not until you are 3/4 of the way in to the hole. This is an improvement but continuing to add weight could bring back a return of your back issues.
This bit confuses me, as my hips are now neutral no? Compared to the previous video? And they don't tuck round any further on the way down as I don;t allow them to due to the upright position?

Just need to get things in my head straight
Aye, I could high bar squat yes, which is what I've said with regards to preferring squats that favour the upright position more (goblets, front squats) I just find them a lot easier, and a lot less hassle to perform.
I'll video some more later if I can, otherwise it won't be till Monday now unless I use the bar I have at home. Apologies if any of the above comes across as aggressive

I just like to understand what is happening.