The decision to seek therapy for eating disorders is a significant step towards recovery. Nevertheless, the traditional model of one-on-one therapy, while beneficial, may not always be the most effective solution for every individual. This is where online group therapy for individuals struggling with eating disorders comes to the forefront. Let's delve into the six reasons that underline its necessity.

Firstly, the emergence and evolution of digital technology have revolutionized the realm of therapeutic intervention. Online group therapy utilizes audio-visual conferencing technology to create a unique environment where individuals can share and learn from each other's struggles and victories, all from the comfort of their own homes. This form of therapy not only abolishes geographical restrictions but also offers a layer of anonymity that can help alleviate the stigma often associated with seeking help for mental health disorders.

Secondly, the concept of 'social facilitation', a psychological phenomenon where individuals perform better in the presence of others, finds relevance here. It's hypothesized that being in a group of individuals facing similar challenges can foster a sense of camaraderie and competition, leading to improved adherence to therapeutic interventions and ultimately, better outcomes.

Thirdly, online group therapy offers a harmonious blend of both cognitive-behavioral therapy (CBT) and interpersonal psychotherapy (IPT). These are evidence-based therapeutic interventions for eating disorders that focus on altering dysfunctional thought patterns and enhancing interpersonal skills, respectively. The group setting facilitates collective cognitive restructuring and the development of healthier interpersonal dynamics, thus holistically addressing the multifaceted nature of eating disorders.

Fourthly, economic considerations can't be ignored. The cost-effectiveness of online group therapy is a significant advantage over individual therapy. By sharing the therapist's time among multiple participants, the cost per individual decreases considerably. This democratization of therapeutic intervention makes it accessible for a broader section of society, even those who may otherwise be deterred by the cost of individual therapy.

Fifthly, from a sociocultural perspective, group therapy can help challenge the pervasive beauty standards that often feed into the development and maintenance of eating disorders. The exposure to diverse perspectives within the group can aid in dismantling harmful societal constructs around body image and promote body acceptance.

Finally, the value of shared lived experiences in the healing process can't be overstated. The group therapy setting allows individuals to witness others' struggles and victories, providing tangible proof of the possibility of overcoming eating disorders. This form of vicarious learning can act as a powerful motivator in the journey towards recovery.

Admittedly, online group therapy may not be the perfect fit for all. The lack of one-on-one attention, potential discomfort in sharing personal experiences in a group setting, and the dependency on reliable internet connectivity are noteworthy drawbacks. However, considering the advantages it offers, it’s worth considering as a therapeutic option.

In conclusion, online group therapy for eating disorders offers a unique amalgamation of technological innovation, psychological insights, interpersonal skill development, cost-effectiveness, challenge to sociocultural norms, and the power of shared experiences. In a world increasingly turning towards digital solutions, online group therapy stands out as a beacon of accessibility and inclusivity, offering hope and help to those fighting the battle against eating disorders.