OK I am personally surprised that anyone likes the Pages router? Pages routing has all the benefits (simple to get started the first time) and all the downsides (maintainability of larger projects goes to hell) of having your routing being determined by where in the file system things are.

I don't care about having things simple to get started the first time, because soon I will have to start things a second or third time. If I have a little bit more complexity to get things started because routing is handled by code and not filesystem placement then I will pretty quickly develop templates to handle this, and in the end it will be easier to get things started the nth time than it is with the simple version.

Do I like the app router? No, Vercel does a crap job on at least two things - routing and building (server codes etc. can be considered as a subset of the routing problem), but saying I dislike app router is praising page router with too faint a damnation.