That's an ok beginning for a larger company interested in Bitcoin mining, but I am curious as to whether or not they're actually going to be able to make money off of their investment rather than just break even. Having been mining for about 6 months and netting ~90BTC isn't bad, but it likely could be better. Chances are they're using this as a trial run.
spending the coins as soon as they get it = possible to break even after a year.
hoarding the coins waiting for deflation = possible profit when the fiat value of bitcoin rises That brings me to a question. What would be the price they had in mind to release their coins to make it worth it for them and how long are they willing to wait for Bitcoin to get there? The costs of mining today are very high now and unless they are risking their own money which is unlikely, they loaned money to start their operations.
This brings me to another question, why not mining other altcoin more profitable? So they can use the alt to buy some btc if they want to invest in especulation?
Competition is hard nowadays...
To answer your silly question, McAfee probably thinks that altcoins are not worth mining. You already know the answer why that is. There are already a lot of debates in the altcoin world and most of them are mentioning that most or even all of the altcoins are nothing but scams. Any serious business man who wants to enter and willing to compete in Bitcoin mining will not give 99% of all altcoins a second look.
miners who are mining for money, don't care about this stuff. all the drama about altcoins being bad, scam, pump and dump,.... are for traders and drama lovers around here.
what miners look for is profit and how much money they can make, and as we can see a lot of miners are mining altcoins. and any new miner like McAfee may not be doing it in the start but they will surely do it to maximize their profit.