Coincidentally I was just reading that the variation in other language's names for Germany is because the country originally federated a bunch of nation-states together, and its neighbors simply called the new country the name of whoever they had been dealing with prior

In any case it seems more respectful IMO to call a place the name by which it would be most recognized by that place's inhabitants. Practically, however, I learned the word 'Kiev' first, and 'Kyiv' just now, so Kiev it is.

Framing the differences here as disrespecting other people's culture is a bit of a stretch, though.