Ok , with all due respects, that is a wrong affirmation.  Strictly speaking, the miner's profitability is only directed towards what is the most profitable coin to mine right now, at that very specific moment.  One person might believe that another coin might have good future (short term or long term) increase in value, but that is mere speculation, not mining itself.
And one activity does not exclude the other:  For instance, if you strongly believe that ZCL will increase in value ("bull market" as you wrote), but Moneris happens to be more profitable to mine at that very moment, you would be much better to mine Moneris, then immediately sell and buy ZCL with your gains.  You would therefore end up having more ZCL in total than what you would have if you would have been mining ZCL directly, waiting for this larger stash to increase in value.  (And, by doing so, you would also be supporting ZCL's price by buying it.)