Just cause something is “a big hashgacha” doesn’t mean its necessarily good. Just saying. I don’t know who this is and its reliability. But that answer “it’s big” doesn’t mean a whole lot.
Most friendly Ice cream is KVH and reliable, however, also depends if you are talking about prepacked friendly ice cream in supermarket or friendly’s that is served in the restaurant.If in the restaurant itself, you might have other Kashrus issues even though the ice cream is kosher. While i have not been to one in a long time, some restaurants have a completely separate ice cream area where the utensils are used only for ice cream and have there own sink area (it is just in the same building)sometimes even has separate entrance, but otherwise you might have to think twice about buying from a friendly’s restaurant.