This re-legalization of hemp farming is a huge deal. It is almost a perfect crop. It grows very fast, requires little fertilizer or pesticides, and can be made into paper, clothes, fuel oil, lumber and even medicines.

It's not of much consequence. Hemp doesn't contain significant THC, so it's not tantamount to legalization of marijuana. Hemp oil for example -- if it's really hemp oil and not CBD oil -- is sold as a health item or "superfood" but is neither advertised to make you high, nor does it. But some sellers take advantage of the confusion between oil made from industrial hemp and oil made from marijuana / cannabis plants (and different parts of the plants, to boot), and claim that hemp oil is CBD oil when it is not, or more subtly, claim some of the alleged benefits of CBD oil for hemp oil.

So this is not a good or a bad thing really, it doesn't represent any real decriminalization of recreational drugs.

Literally the only good thing he's done since being in office.