bitcoin is being used in so many places throughout the world but it can be so much more. It's obvious that there are so many freelancers in every country. Firms, companies, startups etc.. have a limitation that they can hire freelancers only from their country since they can pay them only in their native currency to avoid hassle of exchange. But if firms, companies, startups etc.. start using bitcoin as a payment method to hire freelancers then there will be so many opportunities for the freelancers since they can get work from anywhere in the world. I don't know why has this not become a huge thing until now. This could really change the life of freelancers and give a better end result/product to the company they are working for.
The main point of the trend of uaing bitcoin by freelancers is because butcoin is hassle free and doesn't need any intermediaries to perform any transactions just do it and your done. Also using it doesn't have taxes so theres no decrease if their profits. Bitcoin only makes freelancing easier but doesn't have anything to do with freelancing directly. Like it was only used as payment method but as for the works needed, that's only natural, nothing special, its just like how the freelancing are doing even before the bitcoin era.