Whether they go far enough in warning passengers of low time pilots is another matter.
There would be no reason for the regulator to do this. If the person is a licensed pilot, flying an aircraft within their privileges, they have demonstrated the ability to fly the aircraft to the
minimum standard. If they are "low time", and the warning is appropriate, they have a pilot permit of some kind, rather than a license.
The fact that there are "high time" pilots against whom to compare other pilots, is not the concern of the regulator. Who knows, perhaps the "low time" pilot, who spend the preceding years in front of Flight Simulator might actually be better that the old high time pilot at making the best of fancy avionics!
If the regulator insisted on "high time" before a pilot could fly pax without having to warn them, the minimum number of hours to qualify for a license would be in the hundreds, and all the students would give up (except for those few who
needed the few hundred hours just to get the license in the first place!)