None of the things you're complaining about have anything to do with the order of the grid.
As I have previously said, I'm not necessarily for 'reverse grids' - and just to point out again that the OP is talking about a mixed grid where qualifying performance still affects grid position. I was, and am, responding to what I see as false arguments against. One of those is some self-satisfied notion of 'purity' of the sport (and in terms of that video almost all of the passing manouvres were DRS passes, and the race got 'really exciting' after a SC car period where the gaps between the competitors had been obliterated. Not to mention that the qualifying sessions as it stands is designed as a TV entertainment package, that the teams are forced to use two types of tyre, one of which is absolutely a disadvantage over the other, that they are forced to qualify with the set-up they will use for the race).
The second is that there is nothing wrong with F1 as a racing series. There is. The cars are reliant on those front wing flow generators so that it becomes almost impossible to follow another car, to travell in company with other cars. And the wings have become so overgrown they are constantly getting damaged when cars do come into close proximity.
My main argument for mixed grids would be that it would force the teams (especially those that have the power) to address, particularly, the issues of travelling in company with other vehicles - it wouldn't be enough to design cars that can be very quick in clean air, start from the front and (with the help of DRS) spend the vast majority of the race in that position.