Statistical Evidence. The membership of mass organisations in Indonesia often linked to political party
Keberadaan ormas Islam sudah ada sebelum Indonesia merdeka, bahkan berkontribusi lebih terhadap perjuangan kemerdekaan.
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Nahdlatul Ulama (NU): >95m this is the main supporter of PKB Party
Muhammadiyah: >50m this is the main supporter of PPP Party
You have not counted other mass organisations and the mass organisation involving in Thuggery, Extortion, debt collector, career mass demonstrators. A few to name GRIB, PP, Ex FPI, etc
In Indonesia or anywhere in the world, it's normal to feel envy or resentment toward those who are further along in their careers. While many express disdain for politicians, they still seek to join mass organisations, often tied to political parties, because of the financial opportunities involved. Thye hate politicians yet they still want to join mass organisation hoping to use the mass organisation as their vehicles to advance their careers and later for financial gain.
Remember that you don't need to be part of mass organisations which often linked to political party to live a devout religious, to be able to vote in the local and central government election. Similarly you do not need to be part of mass organisations to take part in mass protests against social injustice, etc.