By that logic the postman, politicians canvassing, the neighbour’s child who lost their ball, are all trespassing.
If someone doesn’t want you on their property, then yes. Hopping a fence is already pretty much blatant trespassing.
Hey man just never cross any property lines without permission for your sake
When there’s a fence, you don’t know the owner? Yes, absolutely. First of all, you don’t know what’s on the property. Lifestock can get spooked. There could be livestock guardian dogs. You could get shot. At the end of the day you don’t look any different from a thied / burglar trying to get into the house.