I have to agree. The word patriarch is only used four times in the bible:
Acts 2:29 “Brothers, I may tell you freely of the
patriarch David, that he both died and was buried, and his tomb is with us to this day.
Acts 7:8 He gave him the covenant of circumcision. So Abraham became the father of Isaac, and circumcised him the eighth day. Isaac became the father of Jacob, and Jacob became the father of the twelve
patriarchs.
Acts 7:9 “The
patriarchs, moved with jealousy against Joseph, sold him into Egypt. God was with him,
Hebrews 7:4 Now consider how great this man was, to whom even Abraham, the
patriarch, gave a tenth out of the best plunder.
The Greek word
patriarches means (from the Online Bible Greek Lexicon):
1) patriarch, founder of a tribe, progenitor
1a) of the twelve sons of Jacob, founders of the tribes of Israel
1b) of Abraham, Isaac and Jacob
Easton's Revised Bible Dictionary says:
A name employed in the New Testament with reference to Abraham (Heb 7:4) the sons of Jacob (Acts 7:8,9) and to David (Acts 2:29). This name is generally applied to the progenitors of families or "heads of the fathers" (Joshua 14:1) mentioned in Scripture, and they are spoken of as antediluvian (from Adam to Noah) and post-diluvian (from Noah to Jacob) patriachs. But the expression "the patriarch," by way of eminence, is applied to the twelve sons of Jacob, or to Abraham, Isaac, and Jacob.
I don't think that any of those saints that rose from their graves after Jesus' death could have been Old Testament patriarchs, because:
(a) Matthew 27:52-53 (WEB):
(52) The tombs were opened, and many bodies of the saints who had fallen asleep were raised;
(53) and coming out of the tombs after his resurrection, they entered into the holy city and appeared to many.
If these raised people were patriarchs and they appeared to, and presumably spoke to, many people, then surely there would be some recorded historical documents stating who they were. Also Abraham, Isaac and Jacob (Israel) were buried in Hebron, not Jerusalem, Joseph was buried in Shechem, a city in the northern West Bank, and the twelve sons of Israel were buried in Shechem or other places, but not in Jerusalem, so none of the patriarchs could have been of those that came out of tombs in Jerusalem.
(b) Paul wrote in Hebrews 11, speaking of the patriarchs and other Old Testament saints, says that they would not receive their promised reward and not be made perfect before the Church has been made perfect first - Hebrews 11:39-40 (WEB):
(39) These all, having had testimony given to them through their faith, didn’t receive the promise,
(40) God having provided some better thing concerning us, so that apart from us they should not be made perfect.
Therefore none of the patriarchs could be resurrected before the church is resurrected in the first resurrection.
However, none of the saints that rose from their graves mentioned in Matthew 27 were resurrected, they were just restored to human life and then died again later, just like Lazarus, so maybe this point doesn't prove they were not patriarchs!