If somebody reads that scripture and thinks the label ‘weak in faith’ applies to them (because only THEY can truly know this) that is their private business to deal with.
However, it does not fall to you or me to be saying this about somebody else. For those of us who are out of the JW religion we have to rid ourselves of the atrocious habit of labeling and judging people!
Of course, this point is moot to somebody with one foot in or intending to go back. Good luck. I’m just glad I’M out.