In reply to Aditya.

Aren't ARIA-labels for links mostly intended for situations where for some reason you can't use meaningful anchor text? Admittedly, it seems like it would be a good thing to include in the UI for a button or link, but that wasn't built into the Classic Editor either. And while that's an appropriate criticism of the current state of WordPress, it doesn't speak to this specific theme more than any other, because the issue is with core blocks.