OP, you should probably take a look at past threads related to this. There are a ton of threads basically talking about how to solve the fees/incentive issues, from merge mining to increasing block rewards, etc. Most of them are quite easy to follow, albeit some points are repeated here and there.
How did you come to that conclusion? Bitcoin's Total Hashrate currently stands at around 450-500 Ehash/s, marking record-high values. From that, we can conclude that the Bitcoin network is more secure than ever. So stop writing nonsense.
He's talking about the scenario where miners' profits are so little compared to the mining cost due to the decrease in block rewards, while Bitcoin price can't keep up to make it profitable. Basically a possible future scenario.