No he's not a total red flag. He's like half-half like you mentioned but slowly turning into a green flag Deedee
But he still hasn't actually told the MC about his involvement in the BDSM play. So it's currently one sided with the MC having no idea why he keeps getting punished which kinda violates the first rule of BDSM play. I'm on team red flag.
i don’t know the TOP A RED FLAG OR GREENFLAG !! kinda 50:50 for me