Without question the advanced features of mirrorless also bring a serious learning curve. Most of the problems I see are from new features. I suspect you'll be fine with a DSLR for another few years - and even beyond that with most of your lenses.
I would think about sticking a toe in the water with mirrorless at some point. Each generation of new cameras is more powerful, but also adds a layer of more learning curve. It can be a bit overwhelming to learn those new features. Even a small kit like the Z50ii and the 16-50 kit lens makes a terrific travel kit and sets the table for future transition with a lot less pain.
I would think about sticking a toe in the water with mirrorless at some point. Each generation of new cameras is more powerful, but also adds a layer of more learning curve. It can be a bit overwhelming to learn those new features. Even a small kit like the Z50ii and the 16-50 kit lens makes a terrific travel kit and sets the table for future transition with a lot less pain.