John Gruber wrote a long, brutal post about Alan Dye's departure:

It remains worrisome that Apple needed to luck into Dye leaving the company. But fortune favors the prepared, and Apple remains prepared by having an inordinate number of longtime talented HI designers at the company. The oddest thing about Alan Dye’s stint leading software design is that there are, effectively, zero design critics who’ve been on his side. The debate regarding Apple’s software design over the last decade isn’t between those on Dye’s side and those against. It’s only a matter of debating how bad it’s been, and how far it’s fallen from its previous remarkable heights. It’s rather extraordinary in today’s hyper-partisan world that there’s nearly universal agreement amongst actual practitioners of user-interface design that Alan Dye is a fraud who led the company deeply astray. It was a big problem inside the company too. I’m aware of dozens of designers who’ve left Apple, out of frustration over the company’s direction, to work at places like LoveFrom, OpenAI, and their secretive joint venture io. I’m not sure there are any interaction designers at io who aren’t ex-Apple, and if there are, it’s only a handful. From the stories I’m aware of, the theme is identical: these are designers driven to do great work, and under Alan Dye, “doing great work” was no longer the guiding principle at Apple. If reaching the most users is your goal, go work on design at Google, or Microsoft, or Meta. (Design, of course, isn’t even a thing at Amazon.) Designers choose to work at Apple to do the best work in the industry. That has stopped being true under Alan Dye. The most talented designers I know are the harshest critics of Dye’s body of work, and the direction in which it’s been heading.

Dye's departure really has been celebrated by every Apple pundit I follow.