More likely they're down to the interior of the Moon contracting as it has cooled.
The range on the ages of these features is pretty wide; they're anywhere from 1.2 Gya to 50 Mya years ago (most probably towards the younger end of the scale). Lunar geologists have an especially broad definition of 'recent' - even compared to terrestrial geologists.
That there was much going on on the Moon after 1 Gya is interesting enough; the youngest feature with a firm(ish) date is the Compton–Belkovich thorium anomaly, a patch of highly evolved silicic rock on the lunar far side which has been estimated at 800 Mya - 1 Gya.
It'd be interesting to see if any of the glowing Transient Lunar Phenomena which are occasionally reported by astronomers can be tied to these faults. One of the explanations for TLPs is that gas might still be coming out of the interior of the Moon.
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