The linked post's author, "Sundance," is Constitutionally illiterate and historically uninformed. He writes, "... there was a 2014 Authorization for Use of Military Force (AUMF) voted and approved by Senate committee permitting military action in Syria against the backdrop of chemical weapon use and terrorism."
Which means exactly zip, nada, zilch. The US Constitution requires the entire Congress, not just a Senate committee to declare or authorize military force. The Senate bill to which Sundance links was actually in 2013, not 2014 (S.J. Res. 21, 113th Congress). The bill never made it out of House committee and never received a floor vote at all in either chamber. On Sept. 10, 2013, it died completely when SecState Kerry struck the now-infamous deal with the Russians that they would take possession of all Syria's chemical weapons.
My own assessment is here: "Trump just went to war with Syria."
I Tawt I Taw a Puddy Tat.
It will never be the same.
What’s the big deal? It’s just one more in an endless series of American war crimes by the world’s leading terrorist State.