I’ve used those. They tend to crumble some of the surrounding plaster. They are also available in plastic, and those would not penetrate the plaster. Pre-drilling worked better with these in plaster. Easy to remove though.
Good anchors expand on the backside of the drywall. IMO, It's better to knock them into the cavity and leave a smaller hole than it would take to actually rip them out.
Good anchors expand on the backside of the drywall. IMO, It's better to knock them into the cavity and leave a smaller hole than it would take to actually rip them out.