“Go open a Gemara, and look how a classic stira between the gemaras statement and a possuk is resolved. ”
You do realize Tanya is NOT exactly a Gemara and, if it doesn’t fit with Pasuk then it’s sort of a problem. It is rather difficult to recreate a Pasuk to fit in a Chidush of an אחרון.
However, we do have the old klal of the Rambam in sefer haMorah, that logic prevails over simple pshat. E.g. where simple pshat contradicts proven science we say a different pshat. So I guess it does depend how well it stands on it’s own….