Anyone who ignores alts as inferior is very shortsighted, and has missed a ton of profits.
being inferior or not has nothing to do with how much profit they give!
None of these are good as currencies, except tether, because they are too volatile.
tether is too dangerous in my opinion. in less than a year we have seen it decline a lot and drop down to 0.9 just because once bitfinex was hacked and the other time their banks blocked the withdrawals.
if you want a non-volatile thing similar to tether then stick to fiat, why bother with something that is not even guaranteeing the price.
I see them more as small cap stocks or commodities.. fixed supply with varying demand.
not all of them have fixed supply, lol