I'll admit the practice can be annoying (especially if you have come from certain other MMOs, where often it's almost impossible to find an open PUG raid that isn't an underexperienced lead demanding top of the crop standards for invites), but I don't think it's something SE really can or should be the one to address.

If nothing else, consider this:

People joining PF groups have completely free rein as to which groups they decide to join or not.

People starting PF groups, short of using passworded groups mediated through supplemental means like LS or Discord, have ... very limited ability to moderate who joins them. They can only specify classes, ilvl, and duty complete if desired, and effectively have to take whoever the first people that come along that meet these limited filters happen to be. There is effectively no manual vetting as there is in WoW's equivalent.

Yeah, you can kick and re-PF, but if anything that's even ruder than demanding experience you have not got, and in XIV's case, kicking someone from a group also silently bans them from ever joining that group in PF for its lifetime even if it is delisted and relisted, so if it turns out you can't find anyone better, you've just screwed yourself short of disbanding the whole party.

So if you want any experience at all and don't want to end up stuck with a fresh prog group that apparently all ignored what you wrote, your only real choices at all (short of outside organizing via social, and honestly I don't think the game should have to rely on social media as much as it does, especially for something this basic) are to flag Duty Complete or demand an ilvl that can't be gotten without a certain degree of Savage experience (and this is only even an option during a certain stretch of a tier cycle).

IMO, the least evil is to leave things the way as it is.

People can feel free to demand the moon and stars if they want (and have to wait correspondingly longer to find people willing to join) - and you can feel just as free not to join those same groups.