If you have a torch that isn’t propane, heat that stud up until it’s red hot. Squirt some WD-40 on it while it’s hot (free contact high if you’re into that kinda thing) and then see if you can take a punch and get it to turn.
The last option should be drilling it out by hand.
I got it out. The last option way. Lol I broke 2 different easy outs heat was not a help that sucker was seized. Drilled it out and retaped the hole good to go now.