[defrost]

I've been a native english reader for six decades .. your subtextual meaning was not apparent in the comment as written.

Perhaps consider that neither you, nor I, nor anyone else has any truly authoritative knowledge on what is "meant" by third party forum comments and we are all limited to what is clearly written.

If you are truly concerned by the fate of the earth should it become covered in vast tracts of radioactive waste from some yet to be determined mystery source, then perhaps ask yourself could it be worse than when the earth had numerous surface level natural fission reactors?