George Adams wrote:

... IMO, one weight rods and 9x tippets are not "sporting"
when you're fishing C&R. I've caught many difficult fish on a midges using a
five weight rod and 7x tippet. ...

There's nothing wrong with a one weight in the hands of a skilled
angler and there'e no guarantee that a klutz won't play a fish to
death with a 7 weight.

I've never owned any 9X tippet and I can count on my fingers and
toes the times I've ever had to go smaller than 6X, but I do use
a one weight frequently. Out west on small feeders where the beast
of the stream is an 8" cutthroat, and it's my favorite rod for those
pockets behind the house-sized boulders in North Cackalacky that
are home to beautiful 6" wild brookies.

I wouldn't recommend a one weight for steelhead, ;-) but for small
fish in small places it's a very fun tool and not at all unsporting.

--
Ken Fortenberry