He is i think! My hypothesis is the now tes is the tes that has already destroy the world and is freed from the abyss. So he's gone through reed and the original tes in loop 13 (i got this impression from ai's bestfriend granny whos terrified at tes age and hes also waaaay more cunning than he shouldve!!) But take all these with a grain of salt. This is my theory and im resisting to read the novel until we got the actual answer from the comic itself aaaaah

I’m fine with spoilers if anyone knows, is Reed actually Tez??? I had my doubts in chapter 104 when he asked, ‘Are you abandoning me?’ And the further I get into the story, the more I feel that might actually be the case. Which would make sense, given all he’s been through.
But if that’s the case, from which loop is he from? So the story she’s in doesn’t end well ? He never succeeds in saving the world. ???