Most of Crown land is off limits to camping for non-residents. They ended that back around 1991. The only places you can gypsy camp are in very remote places. If you want to fish their resources you need to spend your money at a resort.
Not true at all. Some areas (green zones, conservation reserves, Parks, etc.) are off limits to non-residents. The vast majority of crown land is open to non resident camping with a $10/person/night permit.
https://www.ontario.ca/page/non-resident-crown-land-camping-and-green-zones
LOTW is open to crown land camping outside of Whitefish Bay. There are some established sites, but no map or reservation system.