Word "Portable" Threw One Off
But yes, have seen several of those "compact" Whirlpool/Kenmore gas dryers on CL over the years. None were "portable" so to speak, but meant to match the smaller washing machine offerings. As with all gas dryers the connection was permanent and IIRC no wheels as well.
Suppose the things were being offered as an alternative to the "puny" electrical powered 120v compact dryers to those who had (or could run)a gas connection. Also in areas of the country where gas rates are cheaper than electric (think New York for a start), many households might have gone with a gas dryer instead of the 220v electric, full or compact.