Yes, and there is a physical effect associated with it, namely the lunar tidal potential, which varies as the inverse cube of the lunar distance.
However, there are several points which depreciate the significance of this. The first is that spring tides occur at full and new moon, so a lunar perigee at new moon would have the same effect.
The second is that the solar tidal field also varies with the solar distance from earth, and this occurs in late January, so a SUPER supermoon would have to occur then.
Perhaps the most important point is the nature of the variation, which is very flat near the maximum. The article mentions 90%, but the lunar tidal force is within 90% of its maximum value when the moon is within 70 degrees of perigee, and this approaches half the time ( my calculations here. )
The force is within 95% of maximum for angles within 45 degrees, and 99% for 20 degrees. When the moon is within 10 degrees of perigee, the tidal force is within 99.75% of the maximum.
So physically, there is nothing very significant about very close approaches to the theoretical maximum. The press made the same sort of hullaballoo about the close approach of Mars a few years ago, which was said to be the closest in thousands of years. People were walking around saying that Mars would be as big as the moon! In fact, I was asked about this last year, I think, because a popular article about the event “went viral” and surfaces every August.
From the article:
“The moon will be a little closer than it was last year, 1/4,000 of a percent closer,” Johnston told.
Factor in that small change with the inverse square law for gravity and we’re talking about a very, very small difference for the “Supermoon”.