I agree that crashes and desyncs discourage people from being more active.
If on one PC, however, other games run without lag and only NF lags (apparently a common enough situation), then, I'm sorry to say, it IS an issue for SDE and nobody else.
mfischer has been pointing out for the last few years in what complicated way SDE does the routing between the players and the server (especially between the US and Korea). So yes, when all their games play fine and only NF lags, people make a choice (ie, away from NF). That is understandeable and should be addressed.
Well, it's not like we are having this discussion here for the first time... the issues have been coming up so often over the years that everybody, including SDE, should be aware of them.