> With these pressures lessening more and more people are feeling empowered to explore their sexuality.

Emphasis mine. The comment is not, in fact, about letting children explore their sexuality, but people. (When you consider the parent of that comment, that still does not add context implying that we're talking about kids.)

The only part of the comment which discusses children is this:

> For the last several decades society put massive pressure on kids to conform to heteronormativity.

To read this as sexualizing children is misunderstanding the term heteronormativity, but regardless, this is the behavior that is being criticized, not championed.