Non updated full nodes could conceivably put the entire network at risk in the future. It could easily have been the case for this bug.
Updating to 0.16.3 from 0.16.0-2 for a non sophisticated Linux user may be prohibitively complex. Add to this the fact that a neophyte might not even become aware of the need to update at all in situations like the one encountered wrt the 0.16.3 update, and the urgency of streamlining the update process for end users seems to me to be pretty high.
Anyone have any thoughts or info on how much of a focus streamlining updates across different OS's and Linux Dsitributions currently is?