CdCf

If the language begins to change, and a majority of the speakers adopt that change, then that change has become the new correct language. No matter how much the resisting minority objects to it...

This has always been the case. Only now, within the lifetime of people alive today, have we begun to attempt to stop this process, for various reasons. The French example is probably one of the most obvious.
Which is ironic, as a fairly large number of words in French are of Germanic origin...

Generally, the larger a language is (both in terms of speakers and geographical extent), and the more it is subjected to foreign learners, the more simplified it becomes. Look at isolated languages, like Icelandic, where the grammar is quite complicated compared to Icelandic's closest relatives, the Scandinavian languages.

English only has two cases, essentially no gender and almost no complex rules that are vital for basic understanding. That makes it relatively easy to learn. Try Czech or Hungarian instead, and you're in for a ride...

Either you accept change or you resist futilely...