“There’s a false dichotomy here. Nobody ever said God doesn’t bestow grace lavishly, as if He had some limitation and could only “parcel it out” to a “select few.”
Spirited: Agreed. According to Church Father Athanasius, certain elements precede apostasy: a haughty spirit and a will given to rebellion and negation of the Authority and Word of our Lord.
Given this propensity, it makes sense that our Lord would provide sacraments in memory of Himself and everything He has done from the beginning rather than in celebration of ‘human self’ and what ‘self’ believes it has a right to. Therefore, “remember Me when you do this,” said Jesus.
From the beginning, men have been forgetting that everything belongs to God. His Grace therefore is not a ‘human right’ but His to give or not.
Then perhaps someone could provide some Scriptural support for the claim that that sacraments are a conduit through which grace is dispensed.
Otherwise, it's just a speculation by men.