Well, and Stalkfap (Lena acts shocked at the obscene content Ivy posts at first). And club dancing (Lena brushed it off when Ivy mentioned it). Despite being a sexually liberated girl, Lena, at the beginning, chose to separate her sexual life which she keeps private and her nude modeling which she pursues to make art. And that she used to separate from her day job. Posing at the cafe made her come to terms with having to make her modeling a public knowledge. Stalkfap also blurs the line between parts of Lena's life, making her sexuality public as well (even if behind a paywall). She was shocked to know that Ed left lewd comments on her censored Peoplegram pics, imagine if she stopped to think that he also knows about her Stalkfap (it's linked in her Peoplegram after all) and if he subscribed, he probably jerked off to her solo porn. I think Lena copes with Stalkfap by imagining that it's some kind of faceless fapper crowd, and not the actual people she knows. She freaked out when she read a comment about someone referring to her by name and praising her posing at the life drawing event. But considering she advertised said event in her Peoplegram, it should be obvious to her that anyone who knows her by name and follows her on Peoplegram (like Ian, Perry, Ed, Jeremy, Robert and probably others) can also become her Stalkfap subscribers and comment on her content there, and even request custom videos.
I'm personally looking forward to the opportunity for Lena to start putting her Athletics to practice and start dancing with Ivy now that Seymour cut off most of her opportunities for modeling. She can probably replace the Art Gallery with Cafe and opportunity at Wildcats/Axel with Billy. Stan can't really finance Lena long-term so Lena might have to reconsider her position on dancing at the club. It seems like Seymour makes Lena choose between her artistic sensibilities which she can only realize through songwriting and posing at the cafe, or finding ways to capitalize on her sexuality publicly, just like Ivy.
