By easy trials, are you referring to beginner (Green trails) or intermediate (Blue) trails?
I can’t speak to Horseshoe’s beginner (green) trails because I’m not sure there even is one.
I am of the opinion that there is a skill gap required between Blue’s green trails and their intermediate trails. The green trail sections that I’ve ridden there do not feature anywhere near the steep and root sections that you can find yourself in on their intermediate trails.
If these people who are new to DH have some half-decent XC experience they should be fine though.
There is one green trail at Horseshoe, but why it is marked as one, who knows? You have to go down the start of two of the advanced trails and there is also more rock and crap on that trail than on all of the others combined (minus the o-cup trail).
The trail that goes under the lift is pretty mellow, as long as you go to the right after the jump under the lift.
They also have the cross country trails that make their way down the hill, but I have not ridden them so I can’t comment on what they are like.
I would like to think that if someone has at least ridden XC for a while, the easy trails at Blue should be easy to navigate as long as they know how to use their brakes properly. Though, I can understand how it can be intimidating riding the lift for the first time and heading down. I remember my first time going to Bromont, where there really is no where to progress. You are either taking the fire road down or tossing yourself through the rock gardens, no in-between. I’ve been riding since I was a kid and even that made me pretty nervous haha.