There's a market niche for "steam generator" irons specifically for use when sewing (where you need the iron sporadically while assembling a garment from pieces). This is sort of a "pro-sumer" space.
These typically have an offboard water tank and boiler that doubles as a stand for the hot iron. This also lets the iron itself be lighter in weight.
A key feature for this market is the absence of the automatic shutoff that's commonly found in consumer irons.
same answer from my perspective, i did not iron a lot during the last year because of lockdows but i see nice machines using steam. The sound is the same as a nespresso machine so i believe that it is based on the same steam generation technology, opposed to the brass tank steam generation process used in quality espresso machines & professional irons.
These typically have an offboard water tank and boiler that doubles as a stand for the hot iron. This also lets the iron itself be lighter in weight.
A key feature for this market is the absence of the automatic shutoff that's commonly found in consumer irons.