"Under the Law of Moses." The law of Moses is the law that Messiah spent his entire ministry preaching, unto death. It is the law that YHWH gave to Moses for all.
We are under the curses of the Torah, when we disobey the Torah. When we are obedient to the Torah we are baruch.
(CLV) Dt 11:26
See! I am setting before you today blessing and malediction:
(CLV) Dt 11:27
the blessing if you should hearken to the instructions of Yahweh your Elohim that I am enjoining on you today,
(CLV) Dt 11:28
and the malediction if you should not hearken to the instructions of Yahweh your Elohim, and you withdraw from the way (Yahshua is the way.) that I am enjoining on you today, by going after other elohim whom you have not known.
The distinction that you've presented seems to be akin to Marcionism. There is one Elohim; and he does not change. The berachoth that he outlined for Moses, apply today, as they did on the day that they were revealed.
(CLV) Mal 3:6
For I, Yahweh, do not alter; and you, sons of Jacob, are not consumed.
YHWH is not an evil Elohim who gave us his Torah that we might suffer. It is given for our own good.
(CLV) Dt 6:24
Then Yahweh instructed us to do all these statutes, to fear Yahweh our Elohim for our good all the days so as to keep us alive, as it is this day.
(CLV) Dt 6:25
So it shall come to be righteousness for us when we observe to do all this instruction before Yahweh our Elohim, just as He had enjoined on us.
It is Satan who brings the suffering on those who are obedient to his Torah. The prophets were persecuted for defending YHWH's perfect Torah; just as Yahshua was. This is nothing new. They too suffered for righteousness sake.
What is righteousness?
Definition of righteous
1 : acting in accord with divine or moral law : free from guilt or sin
Definition of RIGHTEOUS
What is sin?
Sin is transgression of YHWH's perfect Torah.
(CLV) 1Ki 19:14
He replied, I have been zealous, yea zealous for Yahweh Elohim of hosts; for the sons of Israel have forsaken Your covenant; they have demolished Your altars, and they have killed Your prophets with the sword, so that I am left, I by myself alone. And they are seeking for my soul to take it.
Those who walk with Yahshua walk as Yahshua walks. Yahshua walks in the Torah. Those who reject YHWH's Torah will suffer from their unrighteousness, just as those in the days of Moses. Again, nothing new here.
(CLV) Mt 13:41
The Son of Mankind shall be dispatching His messengers, and they shall be culling out of His kingdom all the snares and those doing lawlessness,