I can't really tell why yfdai market is not growing, I bought $4k+ my investment almost 70% down, and won't say the team ain't trying, cos I could remember they did series of marketing few months ago
To my point of view, I think the growth of yfdai token depends on what the Governance decides to use the token for.
If they can give yfdai more usibility it will be better for everyone, like I understand, SSGT has more token usage and yfdai at the moment.
This can be readdressed