My wife and I have home offices at opposite sides of the house with hardwired desktops and Wi-fi APs, but we can't AirDrop to each other as we're out of range for it.
If you want to send a photo to your friend from your iPhone, just click on the photo and click the "share" button, then you have many options, including sending it via Email..
What am I missing?
There is also localsend, but plainapp needs to run in only one device.
Can be self-hosted, if that's a concern.
I all the time use my phone as a camera (esp. for coin photography) than e-mail the photos to myself as the most convenient way to get them on my desktop where I can edit them with GIMP etc.
When on wifi, the photo backup upload starts immediately. If it doesn't (possibly due to your settings, this used to be my issue) you can manually open the photos app and tap the backup now button.
Google Drive would be another option to transfer, but would be more work (about same to "share" as email, but less convenient to access on desktop).
The e-mail way is actually quite convenient since on the desktop you can just download all the photos you sent in one go - they appear as a zip file that you can then just extract to your working directory, rather than having to save one at a time.
I got mad when I bought a Chromebook thinking it was a cheap laptop I could install any OS on only to find it was boatloader locked and the model I bought hadnt been cracked yet. Say nothing of all of Google's recent practices with Android. This whole thing just sounds like the plague.