For me, the difference between Rubin bros having writing credit on AVA and the Feldy stuff is that you can still tell with AVA that Tom is the main songwriter. The newer AVA songs may have different sounds and don't have endless intros anymore, but it's not like they suddenly sound like Nine Inch Nails now or whatever bands the Rubins are involved in. The core songwriting is still recognizable Tom, for better or worse. I mean he even reuses his own chorus melody (for the second time) on the latest single, so you at least know it's him, lol
While some of the New Blink stuff, like I Really Wish I Hated You, I would never guess it's a Mark Song without his voice. So it's just easy to imagine that those songs were basically delivered to them by Feldy or those other assembly line songwriters they use nowadays. Especially with those comments from Feldy from the Cali era that he "gave them" songs and all that.