Conversion in Shahadah

Rabbi Melamed published that he believed that there is no conversion without receiving a commandment.
But seeing the plight of the latter who believe that it is appropriate to do so in times of need, then families whose sons are in a problematic situation can rely on the rabbis who convert, and the state cannot fail to recognize this emigration.
Although he noted that this was a minority opinion among the latter, it is possible that it was the majority opinion of those who actually dealt with it and that this was the reality in their community.
A. Really, how do we discuss a majority when part of the majority is made up of rabbis who have not experienced such a reality. And if we wave them away, then the majority is clearly on the other side?
on. Rabbi Ben Nun published in response that the Maharmaba, the deceiver, was destroyed, and even more so, on the side of the convert.
So, was Rabbi Melamed wrong?
And what is the Rabbi's opinion on the matter?