There's definitely snob, but SMS is a really bad protocol by today's standards. (Most of my family is on RCS (aka Google Chat) now, and it's a huge improvement while still being worse than iMessage.)
The vast majority of people don't care about E2E encryption, and those that do still probably prefer RCS to SMS (typing indicators, messages send faster, images aren't compressed as all hell, group chats work, read receipts)