A great investor can make money in any market. Doesn't matter if its a bull or a bear.
Making money in the bear market is only possible if you are doing shorting. I consider that as a very risky option. I dont know but I dont feel a "good" investor tries to make money in the bear run at all but wait it out. Always making money is something that is not appropriate. Everyone should have a sort of "time-out" and the bull run is just that.
They say that good and skilled traders can make money at all times no matter what is the status of the market . Thats cool and i think its not inapropriate to earn at all times but its a blessing because most of us are always eager to earn a profit but we cant just simply do it . Whats inapropriate is if you are scamming and doing illegal activities just to make a profit