Is it because praying the sacred Liturgy is an intrinsic good?

Christ is risen!

There are such things as intrinsic evils. Directly killing the innocent — like the pre-born, the elderly, the infirm; or suicide; also, blasphemy, sodomy, and the like.

Are there intrinsic goods? Is the sacred Liturgy one of them?

“It is truly meet and just, right and for our salvation, at all times to praise Thee, O Lord, but more gloriously when Christ our Pasch was sacrificed.” Preface to the Roman Canon for the Eastertide

What does “at all times [ … ] but more gloriously when Christ our Pasch is sacrificed” mean in the phrase of the Preface quoted above, except that whenever faithful are praising in the sacred Liturgy, in which Christ is the priest & victim, the act is pleasing to God?

Does “at all times” mean, unceasingly? Yes. Cf. St. Paul’s doctrine at I. Thess. v:17

Does it mean without exception? Yes, when done in spirit and in truth. Cf. Jn iv:23-24.

Does it mean in the sacred Liturgy? Yes. Cf. the above phrase of the Roman Easter Preface, “but more gloriously when Christ our Pasch is sacrificed”.

Does it mean one cannot be dispensed from giving due praise to God without the one granting dispensation also committing sin? No — although it is disputable. It would be wrong to say that a bishop, for example, could not dispense one or more of the faithful from obligatory adoration, for instance when conditions render it difficult to conclude it is impossible for the one obligated actually to pray the Liturgy. (For example, when a large amount of snow falls, or the earth quakes, to hinder travel to the place of the Liturgy.)

Does it mean there are no conditions under which one can be forbidden to give that praise to God in the sacred Liturgy? No. One who commits a grave delict can be forbidden to participate in the public Service of the Church given to God in praise, as due punishment. For instance, by interdict or excommunication.

Does it mean everyone must attend holy Mass actually during the Covid-19 pandemic? No.

Does it mean that one must pray holy Mass every time it is offered? Hardly.

It only means that when one does, as commanded by God (cf. Jn iv, 23-24) for the intention of giving praise to God in union with Christ the offering priest & victim, a faithful adorer cannot, insofar, either sin, nor be forbidden to do so without a punishment due some crime. For example, were a bishop to declare the pandemic a divine chastisement which all the faithful deserve for our sins, that would suffice to forbid everyone to participate actually in the divine Liturgy celebrated by priests alone.

But have any of the bishops done that?

The act of latria in an apostolic Christian Liturgy is an intrinsic good. For any earthly authority, let alone a bishop, to forbid ingress/access to it indiscriminately for the faithful is, objectively, sinful.

Even Pilate and the rulers of Israel did not dare to prevent the faithful from praying at the first Sacrifice, at Golgotha. Neither has any power on earth or below it succeeded to prevent faithful from ever doing so, let alone universally — until nearly all the world’s so-called Catholic bishops voluntarily accomplished it.

God help us. Immaculate Heart of Mary, triumph!