I started a viral page a week ago and I am now on 1k likes (without ads). I guess bluetagging still works if done right, and so do shoutouts.
I just am having trouble finding US top 100k+ pages that share posts of other pages. I reached out to about 20+ such pages, but most of them are content with their own viral websites.
One viral post can get you many many likes, and consistence is the key.
Zuckerberg killed the reach and FB pages suffered, but if you stick long enough, you will see the rewards are good.