I suspect that the support the west is providing is more or less commensurate with Ukraine’s needs taking into account that training on the modern systems is time consuming and limits the rate that hardware can effectively be deployed. I suspect that some countries, such as Germany, should be doing more but it will only ever be a fraction of what the US is providing, and as long as the Americans don’t ease off I don’t think that additional hardware from other countries will make a huge difference. That’s not to say we shouldn’t all be doing everything we can.