Most people who get into Turking know they're going to be cogs, and honestly, the only thing they care about is getting paid properly for it.
No pie-in-the-sky marketing BS is going to make up for sub minimum wage compensation.
Also, while it does not have the convenience of being a web service, you can download and use AutoMan now (https://docs.automanlang.org/). Most importantly, AutoMan provides statistical quality guarantees. It looks like Human Lambdas uses a manual auditing approach, which does not scale. It's surprisingly common for some crowdsourcing tasks to be as hard to audit as it is to do them in the first place. For the kinds of tasks that AutoMan supports, this is basically a non-issue.
I still actively maintain the library, and I am always happy to talk to people about use cases.
Comically marketing BS is frequently created by consultants who cost money. Money that doesn’t go towards higher wages, or worker bonuses, or coffee in the beak room, etc
People with a feeling of creative control and ownership or having a stake in success tend to do a better job too. Self esteem definitely helps productivity.
I find it hard to believe that this platform will be competing against Amazon Mechanical Turk on price, so they'll have to compete in other dimensions. Increasing worker motivation to improve the quality of the output is a win-win for all the stakeholders, so IMO it's worth pursuing.
If you are running a team doing this sort of work, it's better to be straight up with them and say "you know, this work is boring and repetitive, but we have a good team, look after each other, and you can listen to a podcast at the same time".