Yes and no.
Other apocalyptic symbolism of the time shows us that it works by dressing up the political entities of the day as villains, and the 'goodies' somewhat as universal archetypes.
So there are specific warnings to specific churches - but at the same time we know from history that there were 10 main churches in that area. John chose 7. Why? It's the perfect number. It's the universal number.
So just as Paul wrote to the Corinthians a few times - and it was specifically to teach and rebuke and encourage them - but also us today - so too Revelation works like that.
But you haven't answered the main issues above.
Is John saying "Toughen up princess" to his generation or not? Is he patronising their struggles by saying "You just wait till you see what starts in 1948, and all the failed and ridiculous prophecies that my letter will generate around then!"
The Lord sent His Holy Spirit to guide us into all the truth of the Lord`s character and His purposes. (John 16: 12)
Character.
Thus we read of the Lord in the midst of the churches as the Head of His Body, the one who is the First and Last, risen from the dead, He who is the word of God, (sharp two-edged sword) the very Son of God, who has the Holy Spirit (7 fold Spirit) who is holy and true the Amen and faithful and true witness. Quite a description there.
Then we move on to seeing the Lord on His own throne the Father set up, (Ps. 2: 6 Rev. 4: 2) with His body, (Rev. 4: 4) and the Lord worshipped by angels and the Body of Christ.
Purposes.
It is a throne of judgment with `lightnings, thundering and voices..` (Rev. 4: 5) Then the Father gives His Son the scroll with what will be judged by the Son. (John5: 27) From then on we read of the judgments .................till all things new.
So I don`t read as in `toughen up princess.`