There have been slight changes with each and every new version of Windows, that's for sure. I just had someone asking about how to turn on the delete confirmation message, which is turned off by default under Windows 10 [and for which I, for one, was and am eternally grateful], last night.
It's really interesting that those of us who date from the pre-PC era of computers and the DOS era of Microsoft still use keyboard shortcuts to a much greater extent than those who came of age in the Windows era with "point and click" for virtually everything. The mouse really is a grossly inefficient way of doing a great many tasks like cut, copy, and paste. It can be a really great tool for others, with select being one example that springs to mind.
But, as I said earlier, the ability to bring up a context menu in a text box has been inconsistent, at best, throughout the life of Windows. The paste command has always, invariably, worked. I prefer to find one technique I can rely on, at all times, and stick with it. If it means that I don't need to lift my hand from the keyboard, well, all the better.