They have a very very limited range. I have used them, but only if the AP is in the same room, otherwise, they crap out.
PS: Everything’s built from reinforced concrete and cinderblocks/bricks around here (seismically active region), so we have trouble with all sorts of wireless signals, including WiFi and 3/4G. 5G is out of the question here. We do have the towers, but less than 1% of users actually use them.