You’d probably have to engineer the flight path to go through a building, power line, or other obstacle, but that in and of itself seems like a difficult proposition since flight paths leading into an airport with this type of system wouldn’t have 100ft obstacles anywhere near the approach direction. You’d have to spoof the localizer to be offset to the side of the runway to accomplish this, but doing it too far will cause instruments to disagree (GPS, VOR) and ATC to yell at you.

Maybe you could aim it at a nearby taxiway, but to do so (per my understanding of the physics of ILS) you’d have to have your equipment in-line with the taxiway. All of this just seems really hard to pull off in practice.

One of the many conspiracy theories associated with this incident is that Russia deliberately created the physical and electronic conditions necessary for this crash to take place.

The cockpit records suggest there were more obvious causes in this instance, but it seems very likely a state actor would be able to engineer a successful attack using a variety of means - not just ILS, but other forms of physical and electronic spoofing.

I agree it’s not a practical attack.