No, he's saying we shouldn't use PFAS for carpet or military firefighting, but we should for semiconductor manufacturing where we have control over waste streams.
That's a very bad faith paraphrase of their single comment in this thread:
> For what it's worth, depending on the harms, a sudden total ban is not out of the question as being beneficial to humanity as a whole. It would just be disruptive to enterprise, boo hoo. We don't need to always treat bad actors with kid gloves.
No they aren't! This comment isn't proposing anything!
They are arguing that even total bans should not be dismissed by default, and that there can exist situations “depending on the harms” that justifies a total ban.
And they did not say that in a vacuum, but as an answer to another comment that straight out dismissed total ban as an option.
This comment is in no way advocating for a total ban of PFAS in particular.
Note that this has not historically been the case, see for example all those superfund sites in SV.