The exact line is:

The vote is taken. Only two stand against – and will stand as monument to their shame like the Weeping Angels of old!

The word "like" here (missing from the version in the description), is key - the President isn't introducing these two as 'weeping angels', he is comparing them to something already known.

Given that the President knows of the Weeping Angels, the only way for these two to be the progenitors of the Angels would be if a time loop was involved. That's possible in Who, of course, but we have no evidence of one.

The Angels were only introduced in the 10th Doctor episode "Blink", and the "End of Time" scene is the only canon that connects the two. The only other connection between the races is that they both manipulate time in some way, and there are many differences.

Although the Doctor does lie, and doesn't know everything, he states (in "Blink"):

Lonely assassins, they were called. No-one knows where they came from. They're as old as the universe, or very nearly.

(Again, with a time loop, it's possible that the Doctor doesn't yet know the origin, but there's no evidence to suggest one).

What the Doctor stated - "no-one knows where they came from" - is true out-of-universe as well, at least for now, and excluding the show creators. Out-of-universe, the Angels were a creation of Steven Moffat, but "End of Time" was a Russell T. Davies episode; it's unlikely that RTD would reveal (or hint at) the origin of Moffat's creatures.

Most likely, Rassilon was just making a comparison - "like" just means "like", nothing more.