There is good content that is being produced in Quebec, you just have to look out for it and not expect Hollywood quality production. Xavier Dolan, Denis Villeneuve and Jean-Marc Vallée (rip), Monia Chokri and more, all started their career in Quebec thanks to legislation around creating French content.

The "90% bad TV" also happens everywhere, especially in the US. The number of CSI spinoffs must be really high.

One of the dangers from YouTube/streaming platforms in regard to French Canadian content is that the economics is just not the same. For example, Linus Tech Tips have a global reach since it's English content. M. Net (now defunct tech show in Quebec) or something similar would not even be closed to compete monetarily.