Is this okay to tile over?

[u/samjonseh]

Removed the old tiles from the bathroom ready to retile and it took a large chunk of the plasterboard with it. Is this okay to retile over, or does the plasterboard need replacing?

[u/jwflame]

The broken edges need to have support behind them, you can't just leave them loose like that.

Tiling over plasterboard is very far from ideal anyway.