I agree with you on this.
The scapegoat gets released into the wilderness after having all their sins and transgressions put upon its head in Leviticus 16:21. Do you see that first century apostate generation of Jews as being the scapegoat?
the "scapegoat" you described is not limited to the 1st Century Jews
The End-Time scapegoat is the Antichrist and every Jew & Gentile who will/have given themselves over to the spirit of antichrist.
And then the lawless one will be revealed, whom the Lord will consume with the breath of His mouth and destroy with the brightness of His coming.
9The coming of the
lawless one is according to the working of Satan, with all power, signs, and lying wonders,
10and with all unrighteous deception among those who perish, because they did not receive the love of the truth, that they might be saved.
11And for this reason God will send them strong delusion, that they should believe the lie,
12that they all may be condemned who did not believe the truth but had pleasure in unrighteousness.