This is just me, but if it's so windy that I'd need a windjammer I probably wouldn't even bother to record because the recording will be so full of phasing issues that I probably wouldn't even listen to the recording (same goes for the big-ass Shures).
That generalization is not entirely sound
The impact of wind noise depends on many factors, but mic pattern and the amount of gain are critical. I've recorded up in belltowers with subcards and wind. The big Shures were not enough to to remove all wind noise, but I did not notice any phase issues. I'd guess distance influences phase issues.
The big shures are nice because they leave a decent amount of airspace around the capsule. Also, the foam cells are very open. Many cheaper windscreens have cheap foam with many closed cells (and no airspace around the capsule).
All windscreens will impact the sound, especially on higher frequency sources that are more delicate. I notice it as a loss of crispness and detail; muffling. It is worth comparing the sound of different solutions. I don't think size alone is a good indicator of windscreen performance or negative impact.