Yes, if you think that FTC is the only Neoscrypt coin.
Going by WTM, currently the most profitable Neoscrypt coin is 15% more profitable than ETH only mining on a weekly average basis. Once you factor in dual mining and the increased difficulty that will come shortly from Vega's, that will certainly make it less profitable, at least for RX 580's.
Oh, if you calculate the increased difficulty that will come, the only choice is ETH of course

It seems I just waste my time with new miners...
More options is always a good thing, but everyone can't always win and you can't make everybody happy.