The OP was commenting on the "responses" received from "non-riders." I didn't detect any intent to
brag to forum members about a 25 mile ride.
I too find people's reactions amusing. I also find them mostly encouraging and complimentary. Many non-riders though are indeed incredulous when more than 10 miles are involved in a single ride.
Some folks who feel a need to devalue or ridicule another's efforts do so out of a mistaken belief that their accomplishments are embelished when others' are denigrated. Believe me. I do not ride in any different manner on a given ride because I worry that another member of this forum may be going farther or faster than I at the same time. Nor, as I write down my daily statistics after a ride do I lament or rejoice that others may have better or worse performance records than I.
What we all should "brag" about is that we use some of our otherwise "spare" time to exercise.