I doubt Reddit will die anytime soon, at least not within the next 5 years. They have an incredibly lucrative AI deal with Google, and their activity has skyrocketed over the last couple of years. The average person who just wants to fix their car doesn’t care about Old Reddit, the poor moderation, the spam filters, the slow website, or the removal of r/all. Most people are already used to modern web design anyway. What Reddit has is an active userbase and a huge amount of answers, and for now, that is what keeps them successful.