So, whoever is saying this is probably just blowing smoke, and knows very little about the actual Jewish responses to Jesus. I am confident that whoever is saying this has no evidence to support their claim. It is reasonable to propose that the Jewish leaders would not have allowed a proper burial to Jesus because of his blasphemy, or of his (according to them) false teaching, but, no, they would not have denied him proper burial because of being an idolator, which even his opponents dared not to attempt to do.
I assume that whoever is saying this is trying to “prove” that the account of Joseph of Arimathea providing a burial site to Jesus is an invention because the Jews would not have allowed this to Jesus. Well, we can make such a proposal, and some responsible scholars have done this, but when the one doing this rather ignorantly proposes it was because they considered Jesus an idolator, they are exposing their clear lack of understanding of the historical record of Jewish claims about Jesus. We should interact with people who know what they are talking about, not people like this who make stuff up, exposing their lack of understanding of the historical Jesus.
John Oakes