I had a normal latency stream (about 1.5 seconds) of the world cup on one England game. I saw the goal going in about 5-10 seconds before the cheers from the neighbours watching on DTT.
For the FA Cup final I had two feeds, one the 4K BBC version, and one on SDI from Wembley. The goal went in, and I'd completely forgotten it by the time the 4K goal went in.
The trouble is, things like twitter, whatsapp etc, will work to the lowest latency, and for a football game that's about 50-600 nanoseconds to the earliest viewer. Twitter can push the message within a few seconds (or the VAR result or whatever)
Latency needs to be in the sub-10 second goal-glass range.