It's reasonable that people would care about issues that economically affect them. However, the initial reaction is unlike anything we've ever seen. This was before the economic shockwaves had time to percolate.

Ostensibly, much of it has to do with people's moral concerns. People claim to care about Ukraine, not because it directly affects them, but because of the humanitarian aspect. This is apparent from the focus of the conversation on various claimed atrocities, the "stand with Ukraine" rhettoric. The issue is, all human life is valuable. So if it's about moral outrage, which it is, then you would expect to see proportionate response to other people's lives that matter.

If there was the same degree of attention to Ukraine, but the moral aspect wasn't as strong, it would be hard to argue a pattern of racism. But that's not what we see.