For me, tomato cages ended up being nothing more than a perch for the birds that enabled them to ruin ever tomato they could reach. I haven’t had a bit of damage by birds since changing to rebar! My tomato cages always bent and collapsed or fell over. They are okay for smaller varieties of peppers though.
Late in the season, as the tomato plants died & I cleaned up the mess, I took the cages and used them on my Hungarian Wax Pepper plants and some green bell pepper plants. They needed the support - a couple of them were almost lying over on the ground. I’ll make sure any peppers I plant this year have support from the get-go.