These advertorials-esq articles seem to pop up more and more outside the scope of the credit card hawking bloggers and my beef with them is that they are sometimes contain misleading or blatantly false information.
Take this for example
https://www.businesstraveller.com/bu...300er-service/
Flagship First passengers also get access to their own TSA and customs screening before departure and after international arrival.
Flagship First get their own customs screening after international arrival? Unless this is something new, they don't have their own TSA screening (popping ahead of the pre-check line seems to be how that currently works) included in F tickets.
It almost sounds like the author is confusing the relatively new and paid Five Star™ Private Departure/Five Star™ Private Arrival services with the run of the mill "four class" F service.