Our app has a similar welcome screen layout to this:
The action buttons are at the bottom of a scrollview, so when the text is long, you can't see them. At first I thought this is bad, but then I ran to the above article. It says you might want the user to read through the text before moving on. Is this a good practice or should you avoid it?
I think it's not an accessibility issue for blind users because the button texts are recognized and announced by text readers. But it might be for others.