Yeshua rebuked those things the Jews of the day had gotten wrong. Likewise, every branch has also gotten some things wrong today. Assuredly we will all be one soon though, after the marriage supper of the lamb.
More like everyone's expectations will go up in smoke.
I see Hebrews as an epistle of encouragement, sent to the assembly in Jerusalem who was soon to see the temple destroyed and so the writer sent a word of encouragement to the remnant in Jerusalem to cling to Messiah who is in them, for the slaughtering of animals was not the sacrifice that Elohim ever wanted,(Ps 40:6-8) He wanted sacrificed (circumcised) hearts (Dt 5:29,30:6). The new covenant was revealed before the children of Israel crossed the Jordan, centuries before Jeremiah prophesied of it and over a millennium before the writer of the epistle to the Hebrews reminded the remnant. We are never to look to the earthly things, we are to set our hearts on the things of His Spirit, His Torah that leads us to the Living Torah, Yeshua the Messiah.
Rom 7:12 So that the Torah truly is set-apart, and the command set-apart, and righteous, and good. ... 14 For we know that the Torah is Spiritual, ...