I think the diverse committee makes a lot of sense.
I also see what you're saying about going for the tackle, and I think that's a good point. However, i just watched the replay again of the Robinson play, and he sort of extended his left arm for a tackle while mainly leading with his right shoulder.
Had he tried to tackle Jackson, I think it would have lowered his center of gravity even more, and would have been bordering on a spear, which a Viking just got fined 20K for.
Aside from head hunting, this is a very grey area that will be the center of controversy for a long time. The line between a spear, a devastating play, leading with the shoulder, and attempting a tackle can all be frustratingly muddled.