That's it exactly. Even moreso than with Elsie, we, at Bet's best, saw the heartbreak underneath the brass. Susi Hush, the controversial producer of the mid-70s, is the one I credit most (beyond Julie herself of course) for bringing out those layers. She was the one who did the devastating storyline where the son Bet gave up for adoption came to Weatherfield and was disgusted by her drunken behavior, so left without telling her. Then when he was killed she attempted suicide. Another story she did was where the sleazy husband of former barmaid Concepta hit on her and ruined her relationship with a man she was crazy about. Bet told him she was sending a letter to Concepta, putting him in his place, but when she was alone, her confidence crumbled.
You simply don't have this layered writing for any character on a soap now, least of all female characters.