No, Trump is not the Antichrist. 
We don't need to be "on the lookout" for Antichrist anyway. People make fools of themselves with -- Ronald Reagan is Antichrist, no, it's Barrack Obama, or Jared Kushner (LOL -- that clown?)
Our Lord clearly taught that when He returns, it'll be all over and it'll be like lightning in the sky and we'll all know it. Anyone who appears before that time claiming to be Christ is either Antichrist or some charlatan. We had one poster here who was convinced that Christ had returned.
In any case, there's a huge amount of Catholic prophecy about a period of peace before Antichrist, a Reign of the Immaculate Heart of Mary, and a Triumph of the Church -- way too much to dismiss.
On a separate topic, just last week, the thought occurred to me, in connection with Flat Earth, about why the deception. Of course, it would be more difficult to deny God in a Flat Earth system. But then it also occurred to me, as I hold that the Antichrist will present himself as an alien, if we live on a Flat Earth covered by a firmament, then they could hardly pull off the whole alien stunt. How did said "alien" get through the firmament? And if there's no deep outer space with planets and starts out there, the entire ruse falls apart. But I'll make a separate post about that.
Do my words read: Trump is the Antichrist?
I don't see that anywhere.
In any case, that is not my belief.
Of course Trump and his Kabbalah instructor rabbi are antichrists,
but as for looking out for "THE ANTICHRIST"
we are warned in Sacred Scripture that there will be many
wolves in sheep's clothing
and many antichrists
which will deceive the elect.
So yes, we are to be on the lookout.
They will look and sound Catholic
so understanding the plans of the
Gnostics/Kabbalists/Theosophists
and how they
can sound just like Traditional Catholics
and yet be Luciferians is important
so we are not deceived by them.
Many "Catholic" miracles and apparitions
and "secrets" and "consecrations"
have been faked and deceived hundreds of thousands of good
Traditional minded Catholics.
Who knows if any of the prophecies from any private revelation will play out? Maybe yes, maybe no.
There could be an era of peace before the Antichrist
or it could come after. God's Will be done.
We do know that BOTH the real Antichrist and certain private revelations
declare an era of peace
so there is reason to be on ones toes since they can both claim the same thing.
If you think you know absolutely for sure there will be an era of peace
BEFORE the Antichrist
you may be deceived by him because you are no longer discerning.
The powers that shouldn't be know all about Catholic private revelations and our desire for them to come true
so as to prove to our friends and family we have tried to convince about these things (pride?)
as well as our own human desire for the era of peace and an earthly kingdom.
A fake miracle of the sun or blocking of the sun or bluebeam event which provides confirmation bias to a particular private revelation could deceive millions.
It doesn't really matter if the era of peace comes before the Antichrist
or after.
What does really matter though
is remaining on our toes so we
are not deceived by
any antichrists.
That means calling out heresies and apostasy.
Considering the plans for deceiving the elect to accept the NWO OWR
we must especially be on the lookout for anything
that smacks of Indifferentism, Ecuмanism, and Syncretism.
St John told us THAT is how we will know antichrists.
Many Traditionalists refuse to see these heresies and outright apostasies publicly proclaimed by word and deed by
prelates like Vigano and Benedict.
Could this refusal to see be in part because they are convinced this era of peace is coming (MUST COME) before the Antichrist?
As for the role denial of the flat earth and firmament
play in preparing the world for a fake alien invasion,
I agree with you. I wrote about this a while back in a flat earth thread
pointing out that the Baltimore Catechism now claims there may be other galaxies/aliens.
No, there is a firmament. It's in Sacred Scripture 23 times.