I disagree.
(Heb 6:4) For as touching those who were once enlightened and tasted the heavenly gift and were made partakers of the Holy Spirit,
They were "enlightened" by the receiving the Light of the World into their life. "Tasted" figuratively means to "experience" according to lexicons. These people experienced Yeshua.
(Heb 6:5) who tasted the good word of God and the powers of the age to come,
They experienced YHWH's words and power.
(Heb 6:6) but then fell away- it is impossible to renew them again to repentance, seeing they crucify to themselves the Son of God afresh, and put him to an open shame.
They "fell away" from faith in Yeshua. They once repented of their sins and received Yeshua as Savior. He was crucified for them and they received his death for theirs. Then they fell away from faith in Yeshua and were not permitted to return because that would mean Yeshua needed to be crucified again for them. They brought shame upon Yeshua and will therefore remain in the current state of life without Yeshua.
(Heb 6:7) For the earth which drinks in the rain that often comes upon it, and bears herbs useful for those by whom it is cultivated, receives blessing from God.
(Heb 6:8) But if it bears thorns and thistles, it is rejected and in danger of being cursed, whose end is to be burned. (NEV)
In their return to a fallen state, they do not bear fruit and will be burned.