Asian persimmon wants to fall over

I'm not sure why but 3 of my asian persimmons always want to fall over for some reason. I've staked them for a few years but I don't think it's helping. I'm attaching some pictures of my saijo. It's in an area of the backyard that's a bit of a wind tunnel. I can't put up a wind screen because the neighbor wants sunlight there to grow raspberries. We tend to have a bit of wind that kicks up during the night.
I also have a Nikita's gift persimmon and it's not growing like this at all. The trunk growth is thick and it appears to be very sturdy. I've done the same thing to all 4 fruit tree's. Heavy wood chip mulch around them, comfrey, seaberries, strawberries and pretty generous summer watering.
Was staking the wrong thing to do? I haven't pruned them at all because I read that persimmons either don't take well to pruning or don't need to be pruned. Although who knows if that's actually correct with so much differing information on the internet. Any ideas on what I'm doing wrong?

This didn’t upload properly from my MacBook. Attaching them here.

When you plant them you might have to compact the hole.
For me after planting, I water heavily until soupy, then I jump up and down, really compacting it down, I might add a tiny bit more dirt and repeat.
Nikita is 25% American and 75% Asian, so it develops a better root system easier.

Yeah Nikita seems to have developed a better room system years earlier than the 100% asian persimmons. It's pretty interesting.
I thought I compacted then in the hole but maybe I didn't do it hard enough. I'll take a picture of my Nikita later today and you can see the difference in trunk diameter. It's like night and day.
My Nikita and saijo are from 2017 and I think my early fuyu/early jiro are from 2015.
Should I be pruning the asian persimmons back a little to sections of the trunk that are more sturdy?

Here’s a comparison of saijo to Nikita.