This is what people who have declawed want to bury their heads in the sand about, this is just one of the reasons declawed cats develop litterbox issues and bite.
Please educate yourselves before deciding to make this horrible decision.
Decisions in the past do not make you a horrible person, continuing to make them and making excuses why you do this is unforgivable. We all have made mistakes, learning from them is what makes us better people.
OUR hearts break for all the kitties in the world who suffer this life.