Except she was. Underhill and people that post here in the know confirmed it. With as bad as all the stats you posted were, Loomis was still going to keep Allen until at least the end of the season. Hell Loomis was still making excuses for Allen in his media comments. Gayle forced him to fire Allen mid-season.
Read what I said again and you'll see I was agreeing with you that Loomis needs to go. It'd be great if happened in the off-season but I don't see Gayle making that move even though he's been extremely reckless with the franchise and her money. She can't be happy with having to do all the leg work and talking to the players about what's wrong while Loomis sat on his hands. So who knows, she did the right thing with Allen, maybe she's saving Loomis firing until the end of the season.