Man, I don't say there is a reason for panic, there is a point to think on our steps to PREVENT future panic. Your mistake is that you consider high network hashrate only APART of other signals of danger, you just see one step near you, not far a bit.
1. There is no big deal with hashrate itself, THE PROBLEM is how is this hashrate distributed among Known Pools. The danger is that 100% of new creepy hashrate DOES NOT BELONG TO KNOWN POOLS AT ALL. Unknown hashrate ~= 200MH/s while Known hashrate (belongs to Known Pools) ~=300 MH/s, so Unknown hashrate ~= 60% of Known hashrate. Note, I even don't speak that ASIC or Botnet owners MAY use known pools : they MAY but they DON'T. THIS IS THE MAIN PROBLEM THAT SEEMS LIKE 51% TRY-ATTACK.
2. Don't compare hashrates alone. Compare them IN PAIR with XMR price. For simplicity consider exactly 1 year period. Today hashrate ~=500Mhz, price ~=$45, but A YEAR AGO hashrate ~=500Mhz AS WELL (nothing changed) but price was ~= $400.
You can see easily that mining profit drooped in ONE YEAR for TEN TIMES, not 2, not 5, but 10 times. Our Honest Miners that pay for electricity are becoming bankrupts right now!
All we remember Bitcoin past at 2010-2011. When did Bitcoin mining begin to be completely UNprofitable to mine with GPU?! WHEN FPGA and ASICS came to the scene!!!
But official politics of our community is to be FPGA- and ASIC-resistant, or generally speaking TO BE RESISTANT AGAINST ANY SPECIFIC MINING HARDWARE.
When honest miners with GPUs that pay for electricity can't mine and become bankrupts - THIS IS DIRECT VIOLATION OF THE COMMUNITY POLITICS.
Hmm maybe there's some truth to what you're saying. The Monero Classic chain (the one with ASIC miners) dropped from 60.2B difficulty yesterday to 21B difficulty today.
Maybe somebody is switching off their CryptoNightV0 ASICs and switching on their CryptoNightV2 ASICs?
edit and it looks like the XMC hashrate will continue to drop, their block times are super slow at the moment.
May be you are right... Can you place here links to XMC hashrate/difficulty chart?