It was a hard hit, but I think relatively average by NFL standards. It's often high schoolers who suffer disrupted heart rhythms from traumatic blows.
I saw that Hamlin is 6 feet and 200 lbs. Who knows if the angle was just precise to cause that. Maybe he already had heart issues. Maybe it was medication. Maybe the vax caused his heart to go haywire.
Anyway, the OP is a troll with no "reports" from "sources."