Blackwingsaid: TH isn't fine to stay even if it only offered cosmetics, because it'd still be predatory gambling; you still wouldn't know exactly how much a reward you want would cost you, unlike in Solomon's store, where you know the precise price, because RNG is not involved.
Stop calling something 'gambling' which is clearly not: none of the items offered have a tangible, real value in real life. Only the perceived, psychological value players give them in game. Which is also the main reason why people play videogames (not casino games): perceived and psychological benefits ... (fun, sense of achievement, you name it...)
That is their hang up if they cant enjoy their own accomplishments because of how others gained theirs. Stop blaming jagex for your own psychological problems. (coming from someone with severe mental health problems)