My understanding is that decarboxylation is important for edibles not for smokables.
Your weed is automatically decarboylated when you light it / vape it.
Here's a description - I don't recall the source....
The cannabis plant produces THCA, (or THC-COOH) an acid with the carboxylic group (COOH) attached. In its acid form, THCA is relatively inactive. It is only when the carboxyl group is removed that THC becomes psychoactive. Explains why you can't get high from eating non-decarboxylated (uncooked) cannabis
When marijuana is smoked, the THC is vaporized as the hot air from the burn is drawn across the plant matter. The cannabinoids turn gaseous, at around 106° C (220° F), the carboxyl group is released from the molecule as carbon dioxide and water vapor.