I'm guessing you're running an ad blocker? I think they ran YouTube ads and they sponsored both OffKai and Vexpo last year without having a single VTuber to show off.I barely saw anything of them lol. Only seen them mentioned around in here and very sparsely at that.
They also paid people to watch debuts and had activations like a small browser game and more. You gotta remember, "Biggest marketing push for a small corpo" is not a high bar to clear.
The biggest money sink for them was the models anyways. 8 top tier artists and top tier rigging when lesser known artists and cheaper rigging would have given similar results at 1/10th the cost.