this article is trying to mostly pin it on Elon's Twitter stuff but even the writer admits in the article that a big factor is that Tesla really doesn't have any low-end models. Of course Tesla is going to lose market share in that case

I doubt Tesla is worried about it as long as they keep selling more high end models with massive profit margin compared to their competitors. EV is growing in terms of market share, Tesla will be fine even if they have a smaller slice of a pie that is getting bigger each year