Speeches like these occur in all eras of history, including both the waxing and waning phases of powerful civilizations. It’s about as novel as an old man complaining about “kids these days.”

If you discount that factor: these sentiments are also a pretty normal reaction to any society that has experienced substantial improvements in the average person’s well-being within the speaker’s lifetime. If you’ve watched your country emerge from pre-industrial poverty, then of course your forebears are going to seem (in retrospect) powerful and resilient to harsh conditions, while your contemporaries are going to appear relatively soft and materialistic. That doesn’t necessarily mean you want such people leading you into the future. Indeed, Solzhenitsyn‘s late-life endorsement of Putin shows the peril in that.