That's not the issue here. The issue is automotive are capricious, nasty customers. They know they're a big contract so they dictate disgusting terms, like 9 month payment terms and extremely strict delivery windows and changing deliveries on very short notice. Suppliers get
fined at certain auto manufacturers for not delivering within a
15 minute window, forcing their truck drivers to circle around the facility for hours to ensure they can meet that. The carmakers require extreme delivery flexibility from their suppliers on short notice. In effect, they're still holding stock, but they're forcing their suppliers to hold it for them, and without said suppliers getting paid, or even having the ability to plan for how much they'll get paid.
Because of those extremely hostile contract terms, the carmakers could just turn around and go "oh yeah, all that stock we said we'd order this year, you can make it if you like but we're not going to take deliveries or pay for it" which is what set this whole pile of bullshit in motion. At that point, their suppliers were holding and/or producing lots of stock for them, but got informed they would not be getting paid for it, had to cut their losses, and this ended up disrupting manufacturing for months as lines had to be reconfigured mid-batch and a lot of product got scrapped. While this was happening, the automotive fuckers changed their minds and requested more, meaning the suppliers had to scramble to produce with now limited resources because the scrapped stuff was still clogging the pipeline, so resources got redirected away from every other part.
In short, religious JIT could only have this kind of impact here because the automotive companies are absolute shits to their suppliers and could force them to jump one way and then the other, causing disruption upstream which then spread downstream to everyone using electronics. This is a purely artificial crisis caused by the car manufacturers and is not an inevitable consequence of either the pandemic or the logistics disruption. Air cargo is barely affected and semiconductors and their precursors (except for water) are light and easily transportable by air, and certainly valuable enough that this does not impact their cost. This is a problem that would not have existed without the automotive industry, covid or no covid. They brought this upon themselves, and now everyone else is suffering (and auto execs go on TV and blame work-from-home and remote education for the shortage, which is just adding insult to injury). Screw them.