No.
Track racing isn't dying.
Tracks are dying, and that death is taking track racing with it.
They're not dying because of a lack of thriving racing community. Each of those places is leaving a healthy racing community gutted.
Successful tracks are on public lands, in public parks, managed via public-private partnerships.
Dying tracks are located on private lands, when an owner decides it's done with track racing - regardless of the community's health, wants, or needs.