VTF and VTA- Constant or not?

Every other record I've purchased since I got into analog heavily about half a year ago has been visibly warped. (I returned first few but soon gave up since it seems to be the norm, not the exception, sadly. At least for jazz records. But that's a topic for another thread already discussed here.) Doubtless, warpage affects VTA/SRA setting even for the same record making any valid comparison very difficult and probably not very meaningful. So unless all of your records are perfectly flat, I'd question the benefit of recording settings for every LP and advocate for a setting that seems to work for most records, just to retain my sanity. But then again, I have neither Doug's or Paul's ears, nor their equipment, so I can only speak for myself.