Rewilding had bugger all to do with this - they were on a verge near a roundabout, not on the roundabout itself.
There was a patch of trees in the very small gap between an A road and an arable field, and those trees obscured them. I don't think you can attribute a few trees in an inauspicious location to council rewilding policies.
More relevant is the fact it's a road that drops quite quickly from 70mph to 30mph, and has a bend in it. They appear to have been going too fast and to have made no attempt at the bend.
Clearly you have an axe to grind with the council about rewilding. This isn't the place to do it.