Well, that’s basically the same thing isn’t it ? 🙂
If the random risk is 1/n per exposure and you have x exposures, your cumulative risk is somewhat proportional to x. Primarily you want to reduce x, ideally to zero. If you’ve done everything you can and x cannot be reduced to zero you then focus on improving the 1/n part of the equation with PPE, safe working practices, etc.
One day of the OP taking tiles out, with appropriate PPE = very negligible risk.
Weeks / months / years of working with the stuff (or sitting in a contaminated building) with no PPE = non-negligible risk.
Or leave the house for a few days while someone else does it. Your risk = 0 😀