No, I do not think mercury sits around minding it's own business, and I have tried to make that point numerous times, repeatedly, in regard to the value of chelating even if you still have amalgams.

Mercury is more toxic than plastics only in regard to quantity really. Both are quite toxic. It irks the heck out me that dentists will use a rubber dam to drill down an amalgam filled tooth for instance, but don't blink twice when you swallow (or breathe in) plastic filings from their work.

Personally I even think there is a link between plastics and the increasingly high cancer rates of the past 50 or so years.