First of all, I'd say that, historically and presently, there has been and is discrimination against very vulnerable groups: indigenous people, people of colour, homophobia, etc. That is real.
The question is this: Is DEI the answer? In what I've seen with my experience with DEI, it's been more divisive than it has united people. I think all people in Canada agree that we want to eradicate discrimination and hatred against groups. Personally, I feel that DEI has oversimplified everything and increased divisions.