I do not like that SD cards are so flimsy. My current camera has CF cards and I love them. I wish CFexpress cards came in smaller capacities. I do not really need 64 GB. I still use a 16 GB and a 32 GB CF card. Those cards combined are large enough for 1,500 photos in JPEG+RAW at my low resolution. As new RAW formats are smaller per megapixel, 2x32 GB would be enough for me. 64 GB are overkill unless I shoot video.
The more I think about the pros and cons of new cameras, the more I lean towards just keeping my very old camera (I think it came out in 2011) for another few years and instead invest into new glass. I dot need video, I do not need people or animal tracking, I do not need more megapixels and on the other side I am glad that I have my OVF and a long battery life. Only IBIS is something I would like to have, but even that comes with ist downsides.
Yes SD card are a bit flimsy, although I've never broken one. They are also tiny and easily lost. But they are ridiculously cheap, and available almost anywhere, even in remote villages in the Amazon.
I assume from your handle that you shoot mostly architecture, so as you say, there is no need in your case for fast cards, high burst speeds, video or animal-eye AF tracking etc. But I'm surprised that you want IBIS, unless you shoot handheld in poor lighting.
CF cards fell from popularity primarily because it was so common for people (myself included) to bend the pins in the camera when changing cards in a hurry, so I'm glad they are a thing of the past.
Ultimately I think most new camera models will have CFE slots. The prices will eventually drop, and 64MB cards will become available.
As for keeping your DSLR, good for you. Why be a slave to fashion and spend more money than you need to, if you prefer an optical viewfinder and the many other benefits afforded with DSLRs?