First, read what I actually said. I did not say you can misalign the splines by "just removing the axle", like you are now saying. I said that any time the axles are out, the splines can become misaligned. That's a really important difference.
Most of the time someone is pulling an axle they're not just pulling it out to slide it right back in either. They're doing stuff. Like, I don't know, removing a thrust button? All it takes is half a spline width off. And if the axles are out, the splines CAN GET MISALIGNED. I didn't say it was easy, I didn't say it happens every time, I just said it's possible. And clearly, it is.
Remember, this thread is about having an issue after the thrust button was removed. The context is important.
And just because you've been doing something "for decades" doesn't mean you've seen everything. I've been at this for decades too, and I sure as hell haven't seen it all. I can absolutely guarantee you haven't either.