Kind of a strange reaction when you are trying to install software that has not been updated to work with the most current OS while other suites in the category have.

It's not Apples responsibility to make their product compatible with someone else's product even though historically they've gone above and beyond to support legacy apps.

Developers get access to the newest OS well in advance of even public Beta and have ample opportunity to update their code so blame them for the lack of support.

And it's not like you have zero options for alternatives.