So? The arguments, statistical analysis and summary data they base the report on are all either in the report I linked or derived from publicly available data. You don’t need to trust anything they said. You can check each individual claim.
There’s no appeal to authority here. If you don’t believe their analysis feel free to attack it on the merits. But if the devil says 2 + 2 = 4 it’s still true. Either the analysis is correct or it isn’t. If it isn’t attack the analysis. You don’t need to trust the Heritage Foundation. If you can demolish their argument please do.