''DBT, Orthodox Judaism, had little regard for the OT writings....

''DBT, Orthodox Judaism, had little regard for the OT writings. For instance, one of the most prominent divisions of Judaism, that of the Sadducees, rejected the Scriptural teaching of the resurrection and denied the existence of angels. (Mark 12:18-27; Acts 23:8) This automatically led to their rejecting OT teachings that the Messiah was to die at the hands of his own people. You can find these prophecies at Isaiah 42:1-7; 49:1-12; 50:4-9; and 52:13–53:12.''

It doesn't matter who may or may not have any regard for OT prophesy, it is a matter of determining whether Jesus as the Messiah actually relates to or meets the requirements of the prophesied Messiah as described in the OT.

Clearly that is not the case. Which is why Orthodox Judaism rejects the claim.