I think we need to be careful about posting screenshots of SN locations and using it to say a chaser was hit by a tornado. There can be significant lag in SN location so using it as the only source of information to say a chaser got hit can be a dangerous accusation.
Dean is correct. My position on spotter network is almost never anywhere near where I am really at a given time. For starters, I only beacon thru RadarScope, and the only time RadarScope beacons is when it is in the foreground being used. Since I use GR mainly, I only occasionally have RadarScope in the foreground. Anytime a chaser has the phone asleep or is using another app, it doesn't beacon. Of course if I make a report, the location updates and is correct.
Second, RadarScope doesn't show you how old a beacon is, and when you loop a radar the positions don't update. I'm not being down on RadarScope (I love it) - but it wasn't intended to accurate report everyone's position all the time.
As for number of chasers you have to remember that many vehicles have more than one chaser in the car running RadarScope and reporting position, so does those 4 dots represent 4 chasers in separate vehicles or is it 1 vehicle with 4 chasers in it each beaconing at different times as they go down the road? Add in limited zoom capability and it always looks worse that it is.
As someone who chased both Friday and Saturday in the panhandle I can tell you it wasn't anywhere near as bad as it looked. Lots of cells kept chasers spread out on Saturday.
Before I end my rant I will note that chaser convergence is real, and is a hazard. My rant isn't to say it doesn't exist. It just isn't always as bad as folks make it out to be.