The F35 is primarily a air to ground strike aircraft. Gen 5 is mainly semi stealth benefits. It is disadvantaged relative to air to air specialized planes who are faster (lighter) and more maneuverable.
The only possible role for Canadian F35 is as force amplification to US bombing campaign. The kill switch, or permission to turn on switch, makes it a useless weapon against the US. It is an extremely overpriced plane with low reliability, and flight hours. If RCAF wants the plane it is because they are more loyal to US empire force amplification than Canadian defense needs, and anyone who holds that view needs to be convicted of treason. No trial whatsoever is needed, as long as they are proven to not be functionally full tropic thunder.
We need to not just cancel the contract first, and negotiate later, Demand refund for existing planes.