Sure there are people who wouldn’t carry no matter what, but I mean that many people don’t hold of the eruv period.
The issue with “קרפוף” is by far new, and all achornim managed to deal with it.
There was an issue in Monsey over סוכות where the eruv around the קרפוף was found to have fallen down and no one was able to say how long it had been down for as that part wasn’t checked weekly. This upset a lot of people as the reliance on the קרפוף to begin with was done in a way that relied on קוּלות.
it has never been done
And? Treating everything a Rov once said like it’s Torahs Moshe leads to some very questionable life choices, as has been demonstrated by many different people and communities. If it’s not written down as a פסק הלכה for that particular situation, like Rav Moshe ZT”L did with the Brooklyn eruv, it’s meaningless.