I'm personally more likely to trust Marketplace than not.
In January 2022, for example, a long-time former journalist with CBC discussed some objectivity and quality concerns:
https://tarahenley.substack.com/p/speaking-freely
Among the mainstream news organizations in Canada, CBC is, in my opinion and experience, the least-trustworthy and lowest-quality of them.
If you've got data or research that supports your argument that the CBC is, as a whole, deserving of such low quality and trust, I'm genuinely interested to hear it.
Otherwise, it just reads as ideological opposition as opposed to genuine criticism.
FYI, your source now contributes to the Daily Mail and Fox News. By her own admission she is staunchly against the "woke" agenda (whatever that is). Here's an interview with her that balances out your provided link - https://www.canadaland.com/tara-henley-cbc/
Vs. a "don't trust repair, just replace it" conclusion...