Last year these websites were more active, with a lot of job available.
xbtfreelancer.com is frozen, last job posted around 2 months ago
On cryptogrind last job was posted around a month ago.
On reddit thread is flooded with a lot of freelancers offering their services, and really few are hiring.
I don't know about upwork but in general, freelancing related to bitcoin and crypto is frozen. And It makes no sense, why there is no hiring and where are those who used to hire on those websites? Why there is no one new hiring or posting projects?