I still love my 10.5" Pro. I bought it new and sealed for a great price in 2020 and got it replaced just a few days before expiration of waranty in January due to a bright spot. I hadn't bothered me thaaat much, but Apple deserved it and now I have an almost new unit with fresh battery. A10X + 4GB Ram is still more than powerful enough for most tasks, including Procreate. The bezels are also small enough, I still have OIS (unlike the 2018) and a headphone jack. I can live with a smartphone and bluetooth speakers, but for a tablet I am using at home, I want to use my wired headphones without silly adapter. Killing the port for the sake of a bending skinny device was really dumb.
The newer Pros are too expensive for me. A12Z, M1 or whatever, I don't care - diminishing returns. For truly professional work, I rather work with a proper OS on Macbook or Desktop. Should I upgrade my beloved 10.5" in 1-2 years, then I will go for the Air 4 instead. It is Pro enough for me. I can even live without 120Hz: Deactivated it on mine to test it and indeed, the difference is not that massive. I dont read text while scrolling.