This strikes me as an incredibly odd thing to say given that:
1) TNoM has significantly fewer sex scenes than the vast majority of AVNs for its length, particularly given that several of those are abbreviated 'mini scenes', and
2) how much every scene that is there is necessary to maintain some verisimilitude rather than having 20 somethings in a new sexual relationship who are living together just abstain for no reason other than to reduce the devs workload. No one starts hooking up with a new partner then waits days between rounds 2 and 3 if they don't have to, particularly people who are new to sex or who have gone without for awhile.