Demand drop from credit phase out is not well thought out. First off, there is a very good chance it gets changed before then. The issue is that American companies like GM and Tesla will phase out first and German and Japanese companies will have a tax payer funded advantage over GM and Tesla. Dems will support an extension for obvious reasons. The maga crowd should be agreeable to at the very worst case to start the phase out for all at the same time or best case, extend all to a set date phase out that is similar to solar. Syncing up with the solar credit phase out and actually making it a credit that can be carried forward would be ideal. The maga crowd could also require manufacturing in the US to get the credit, this wouldn't help Tesla or GM unless the credit was extended as well, but would help with competitiveness.
I'm not going to down play tax credits as they have been beneficial. But Tesla is the only company that can build EVs without them. Credits are a demand lever. Tesla has many it can pull to spur demand. This is a company that is supply constrained BTW, so pulling demand levers may not be required. She examples; free SC for life, 2170, refresh, 30% GM means they can cut prices, 120KWh pack. Just to name a few that none can counter.