My decisive test to distinguish an idea from an ideology: “Does it matter if a person dies as a result of this idea”

“Does it matter if a poor person dies as a result of not finding a place to be employed in society” => Capitalist ideology

“Does it matter if a person dies as a result of not believing in Jesus” => Christian ideology (as opposed to simply being Christian)

“Does it matter if someone dies as a result of being vaccinated” => No? => Pro-vax ideology.

The opposite is true: “Does it matter if someone dies as a result of Covid” => No? => Antivax ideology.