Are we disagreeing that when this is a 1/2 flier it's bad? I'm OK disagreeing on how often it will be that--again, experience is experience--but it's really hard to argue storm crow has a place in cube.
There are format contexts where a 1/2 flyer is a good body. In fact, a 1/1 evasive body, with decent abilities, can be really powerful in low powered formats.
Here is a card I've been running for years, and has consistently been great.
Many an opponent has died to a moldervine cloaked or equipment carrying scryb ranger, which in lower powered formats can actually be a thing due to the removal suites being less punishing on these strategies, and there being more general time to deploy them.
On top of that, the lack of high quality 4-6CC ETB creatures, and planeswalkers, means that the games tend to develop slower, as lower power cube formats tend to be much worse at setting fast tempo, and exerting crushing pressure on an opponent. They tend to lean much more towards being attrition games and matchups, where early chip damage can add up. This means that an evasive 1/2 body, dropped on say turn 2, can independently do 4-5 points of chip damage, before equipment hits it, and starts providing real pressure to close out the game, and that chip damage matters.
Here is another--broken--example
Obviously, I wouldn't run pure storm crow, there has to be some additional effect that makes it fit in nicely with an existing archetype, but there are a number of low power archetypes that
do actively want and use cheap evasive bodies.
The floor on freebooter is also fine. In this context, like I said, the body is servicable, but furthermore, even if it "misses" its not some kind of catastrophe, because
the information you get from the casting is oftentimes more valuable than whatever card you took.