If you want to keep the Iranians out of Syria, then we probably need to keep troops at the base in al-Tanf. With the US gone, Iran will more easily be able to transfer sophisticated weapons to Hezbollah in Lebanon, and to deploy its own forces and weapons against Israel from Syria.
Yes that is true, that is why the Syrian apologists on Twitter are always complaining about it. Iran talking through Assad. And Russia pretending to mediate for Kurds.
It is the Middle East.