Figure-8 capsules have an inherent low-frequency rolloff of 6 dB/octave below "some frequency"--what that frequency is, depends on the overall design. By increasing the capsule's damping, that frequency can be pushed lower, but then the sensitivity and signal-to-noise ratio also become less. Any given commercial design is a compromise among those concerns.
Of course not all designs are optimal (or anywhere near), so it's also quite possible to have a capsule with poor low-frequency response AND a poor signal-to-noise ratio. Most lower-cost capsules are like that. No comment on this particular one, which I'm not familiar with.
The net effect of recording M/S stereo with a figure-8 capsule that has a severe low-frequency rolloff will be that the resulting L/R stereo version will tend toward a mono pickup at low frequencies, due to the relative lack of output from the side-facing capsule. Back in the LP era that was arguably a desirable characteristic (it led to less skipping when records were played by cheap phono cartridges). Otherwise it's a highly undesirable characteristic for music recording in general, but arguably it can be a good one for dialog recording--even better if the forward-facing "M" microphone is filtered so that its low-frequency profile is fairly similar.
--best regards