https://www.ebay.co.uk/itm/Fender-Jazz-Bass/182988650320?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D49130%26meid%3D537622dc6ad542afaa6d2b34918cbae7%26pid%3D100005%26rk%3D6%26rkt%3D6%26sd%3D362200709424&_trksid=p2047675.c100005.m1851
"I can't tell for 100% is it real fender parts" - well, I can tell the machines aren't!
As mentioned, even the county would give a general idea of the area.
Work-wise, most peoples jobs say they shouldn't be posting online whilst at work.
No need for their precise post-code.
There are some commercial brands which assemble basses from off-the-shelf parts.
Recently I nearly bought a Peter Cook Mighty Mite P-bass - he made them in the 70s/80s(?) and one I saw had a Mighty Mite logo.
Ah yes, forgot to mention switch cleaner - squirty cans avalable from Maplin (also squirty cans of air, which are handy for blowing out dust & detritus).
You stated "It's your opinion that the site should demand location information" and I clarified, by saying "it's my opinion that the site should require it, but it's not my demand that the site must require it.".
That's OK to say, isn't it?