I don't have one but it would be great as if I wander off road around here exploring, a lot of the ancient bridleways can be very steep. Going downhill, being able to get my rear over the back wheel would give me far more control especially with rocks and small drop offs. As it is I either take a gamble and the danger of going over the bars or I get sensible and dismount.
I too would like to add dropper seat post to my bicycle so I cloud put a foot on the ground at stops but it would be too high with my Kinekt suspension seat.
The Reverb AXS APLR locks out in the topmost position but if you move it down slightly (which requires finesse according to reviewers) it has compliance. It uses a standard shock pump to set the firmness.
I know this because I'm getting a gravel bike and thinking of adding that stupidly expensive dropper to it because it's pretty much ideal if the bike already has AXS shifters.
The main reason I am considering one is that a lifetime of being tall has built the habit of putting my foot down when stopping, without moving out of the saddle. Having a Tero X with a dropper seatpost has only encouraged that habit. It's very nice in city riding when stopping or operating crosswalk buttons.
I have one on my gravel bike and never use it. I should add that when a mechanic friend was helping me finish setting up the bike he had one on offer for cheap and set it up so that the left brake lever activated it which I thought was cool. But to be fair I have one on my emtb and never use it either because I am so used to not having one from years of cycling off road without it. The only time I ever made good use of a dropper type post was once when I rode the Slick Rock trail over 30 years ago on my IRD Full Stroker with a Hite Rite and RQR. Some scary drops in there!