My parents used to take us to Furr's Cafeteria, and in the 80s they had a green Jello salad like that. I think it was... creamy somehow? Not absolutely horrible but not something I miss.
I grew up in the south, where we also have these monstrosities. If you’re the kind of person that goes to McDonald’s and thinks their sweet tea isn’t sweet enough and you also have a high tolerance for weird textures, it may be up your alley.