My issue with that site is that it's microtasks like liking tweets or doing monotonous work for small bits of sats.
As a task worker, you are correct -- nearly all the tasks listed are of the variety you describe, ... where because there are no skills required the compensation is trivially low.
But that doesn't mean Microlancer won't work for an employer looking for a freelancer. Many freelancers are on Microlancer already -- you can see the Fiverr-type listings (under Microlancer Services) where they offer to do work, looking for a client. But the client/employer listing a task that is even a small project (e.g., $50 in compensation to design a logo) is few and far between, nonetheless the type of freelancer hiring found on Upwork where it is a need for a developer for X hours at $N rate that would be attractive to a talented developer. And because those types of listings are rare, there aren't a large number of skilled freelancers regularly frequenting the site looking for new listings in which they might be able to earn. It's a catch-22 situation.
But Microlancer is, today, suitable for many of the same type of listings that are found on Upwork, and on the rare occasion those types of tasks are listed, they usually find someone qualified to do the work, and promptly. So it's not like our bitcoin ecosystem itself couldn't use Microlancer for finding freelancers, which would help this staunchly bitcoin-only freelancer marketplace to grow.