What is the ruling on creating a WhatsApp group to read Surat Al-Mulk every night before sleeping?

Reading Surat Al-Mulk before sleeping is a recommended practice (Sunnah), based on Jabir's statement: "The Messenger of Allah, peace and blessings be upon him, would not sleep until he had recited 'Alif, Lam, Mim, Tanzil' (Surat As-Sajdah) and 'Tabarakalladhi biyadihil-mulk' (Surat Al-Mulk)." There is no harm in creating groups to encourage one another to recite it. However, it is better for a person to recite it alone, as this is closer to sincerity (ikhlas) and further from showing off (riya').