I fought in Ukraine and here's why FPV drones kind of suck

You need to compare this to hit rate with mortars and attrition by counter battery fire on mortar teams. Not to detract from a sober assessment but it's hard to judge without the other parts of the story.

Thr tldr would be "temper expectations"

This.

Mortar may be 5 times cheaper but 100x easier to destroy it and its crew.

Also half of the problems described are purely technical and can be easily solved with some budget. In Ukraine most drones are assembled by volunteers. So its not the reliability of drone that is an issue, its lack of proper assembly and QA.

As noted if you have the budget the end product is a FGM Javelin or a Spike NLOS or as the article mentions a switchblade.

These things are pretty much the same thing (a thing that can be carried by a man that accurately puts a warhead on a target) just better and more expensive.

edit: Actually the NLOS might not be man portable, but there are other smaller Spike missiles that are.