>> Others, who had been considering the procedure for a while, were apparently spurred by a concern that vasectomy could be outlawed next.
> Is this a common concern?
Perhaps in some quarters. In our polarized times, cultivating fear is an easy and effective way to motivate "your side," and the use of fear is not limited to any particular faction. The country is full of people who have pretty irrational and unrealistic and exaggerated fears of what will happen if the "other side" wins.
And the evidence is right there in the quote "Dr Doug Stein" appears to be from Florida. Abortion isn't banned there, it's just recently been severely restricted very recently. If his patents are coming into his clinic incorrectly thinking abortion is currently banned (implied by "outlawed next"), I doubt those people are going to be able to make reasonable predictions about what will happen politically in the future.