The tests are written to approximate the questions that a navigator may reasonably need to solve in the course of his work. The tables were the method that this was accomplished prior to the advent of computers. However, it can reasonably be assumed that if the tables of V2 are available in the chart room of a ship, then V1 would also be available.
Therefore, if the test is structured to approximate the way a navigator goes about his work to solve problems aboard a ship, it only makes sense when supplying V2 as a reference, that also supplying V1 would make the test more realistic.
And furthermore, as technologies have evolved on the bridge, the current CG tests are becoming less and less linked to knowledge that a navigator needs to know or any competencies required to actually navigate. The test preparation has become only a means to pass the test itself, and many of the skills will serve no purpose at all to the modern navigator.
Some things will inevitably need to change. Why are officers still expected to solve tide and current problems using tables from 1983 when NOS stopped printing these tables in 2020? What is CG going to do about paper charting now that paper charts are going to be completely phased out in the next few years?
Yes, the RECs can continue to print old training charts from the 1990s or could modernize them by printing paper copies of vector charts. But what is the point of testing someone in this manner when that is not how anyone actually navigates today?