mostly agreed
from my own understanding, EVERY ship has ram-scoop tech on it (including fighters), but it's only really useful if flying (a) in a straight line or (b) maneuvering at very low velocity.
Just like in privateer; the "fuel" gage goes down any time you jump, use afterburners, or (to a far lesser degree) turn/roll/climb/dive (so in other words, the maneuvering jets are also powered off that same fuel, just to a far lesser degree, you just don't see it cause they didn't really program it in that fuel would be consumed if you set speed to ZERO and then taped the left-turn key down and left the game sitting like that).
Only thing I didn't agree with is that in many other series that have ram-scoop tech (Red Dwarf, Man-Kzin Wars, Star Trek, Star Wars, just to name a few) is that ram-scoops could work at almost any velocity in general space (in some cases, like MK-Wars, with the scoops set to max ships could eventually get up to 98.5% of light speed and maintain it so long as there's enough fuel in the path and years if not decades to spend on the hard-g acceleration).
The biggest argument (or counter argument) is the locale they are used in. Its one of the smarter things Wing Commander does. (Unlike Trek and other sci-fi's where they tend to fight over vast areas of pointless empty nothingness almost as if those areas were as important as food/energy/mineral rich high-content star-system-like areas.)
WITHIN a star-system the free-hydrogen (background gas available to be scooped) is extremely low because gravity tends to suck everything up. Free-hydrogen in space would be near-zero (and you'd probably find more as "dust" around a bed-sized chunk of rock or space debris than in an empty area ten-times that size).
Best bet for a "plentiful" supply would be a gas-giant planet... do something like Destiny does (in Star Gate Universe) and fly down just close enough to scoop a bunch up before having to escape the killer-gravity). My guess is WC does something similar, except that they have two tanker types (one gathers raw from gas-giants, delivers it to a refinery, and the other tanker type goes from refinery to fleet and is the one we typically see in missions that have tankers)
OUTSIDE a star-system the free-hydrogen gets thicker (allowing it to even form clouds that are so thick they can block light). Gas content, if just the right density, can leave tracks indicating what has flown through the area recently; not that anyone bothers with these vast tracts of empty nothingness.
Unfortunately the majority of jump-points occur near locations of higher-gravity... so while a tanker might fly out to go and refuel its massive tanks (with or without an escort) there isn't much point to sending a whole fleet with it. Defending empty space that has no jump points wouldn't make much sense. (easier to steal gas off a gas-giant).
And the resources needed to attack enemy tankers that refuel in such locations is equally as pointless. You can't burn away the background hydrogen gas - its not dense enough to do fission/fussion, and it won't ignite since no oxygen ... nevermind the expenses to recon due to the distance involved (cause no jump points... you'd have to waste fuel just to get there and back; and then it could be more dust or other kinds of gas than hydrogen (or whatever a "looked good but turned out a waste of time/resource" situation would be).