If you contort any harder you might need to join the circus. Indeed your last sentence makes clear why you think this is no big deal (while the incident in TFA presumably is).
Yes, the fuel was a problem since they were were barred from going their intended route! They chose to land in Vienna??
Could Evo have landed in Basel? Could he have returned to Moscow?
Which airports could he have landed in?
To be clear; I'm not saying that the US pressure and European action were anything but petty. But you know; not all pettiness is equivalent to kidnapping a civilian plane.
Also, while I'm not willing to assume the best of intentions on the US's part; neither am I willing to assume them on Evo Morales's part. This grounding was in his interest - he had nothing to lose, and everything to gain. I doubt he tried to prevent the confrontation, and he may well have even taken actions to enhance the appearance of victimhood - it's always nice, playing a victim; especially if you're not actually suffering any harm.
Yes, the fuel was a problem since they were were barred from going their intended route! They chose to land in Vienna??