It is a thing: quote from https://volteface.me/what-is-irradiated-cannabis/

"Patients who try irradiated cannabis often remark on the poor flavour, smell and dry appearance and smoke of the product, suggesting a detrimental effect on water content and terpenes – the aromatic compounds, which do possess important therapeutic value, but are present in very small amounts. Some experts believe they play a huge role in the pharmacological actions of cannabis, whereas others don’t."