…and when I type standard, but clique-centric, abbreviations and slang among my own groups, the iPhone messes those up, too.

Options also exist to pre-populate the predictive wordlists with our own terms, and to turn off predictive text altogether.

But you can not disable predictive button resizing.

Predictive text replacements are very bad, but they mitigate the worse issue of the fact that the keyboard is incessantly shifting with every single keypress.