E-transfer is a household name and a verb in Canada. It is used by everybody in Canada to send money to loved ones and to small and medium-sized businesses to accept. That is a sign of a payment system adopted by many, used by many and trusted by many.
The Pix network in Brazil, the UPI network in India and the Swish platform in Sweden are all fantastic platforms as well, but e-transfer is more widely used than those systems.