You still haven't answered why you are saying that "customer support" is "way below par". You're getting your spare tire, right? So they solved the problem, even though you were part of the problem? That sounds like GOOD customer support to me, not "way below par".
I said:
There are many reports of people who got their vehicle but had their spare tire shipped separately because of supply shortages
You responded:
Finally (and I'm done!) one additional "fun fact" regarding conversations about tire shortages. My local Discount Tire store can get four of the tires at their store tomorrow.
Which seems to be a side swipe at me, saying I'm totally wrong. So I'm going to point out that:
1) Discount Tires may have Pirelli Scorpion
tires in the right size available, but I guarantee they are not the same tires that were specially developed in partnership with Rivian. Those are not available through any retailers yet.
2) Discount Tires most certainly does NOT have the
wheels in stock or even available.
3) Rivian does not yet allow purchase of spare tires/wheels in the Gear Shop. Other items that have limited availability, like the wall charger and the cargo crossbars, are also not available for purchase yet. These items all exist, they just have limited quantities and need all they can get to fulfill existing orders.
4) Rivian does not allow you to purchase spare tires/wheels outside of the vehicle purchase, and does not allow you to purchase entire sets of tires/wheels at all. Many of us have asked our guides if we can purchase a second set (e.g. a 20" set for winter/off-road use in addition to the 21" or 22" that came with our vehicle.) The answer is NO. Some of us have asked if we can purchase just two extra to mount on our travel trailer so the wheels would match the vehicle. The answer is NO. It's not because they don't want the money, they just don't have a lot of stock beyond what they have to fill existing orders.
5) Rivian is, in some but certainly not all cases, delivering spare tires separately from the vehicle. This is a lot of extra work and they would not be doing it if they had a whole warehouse of extra tires/wheels sitting around.
6) Rivian is prioritizing production based on tire/wheel choice - initially almost everyone was receiving the 20". As availability of the tires/wheels changes, tire/wheel choice affects your delivery date. This is evident from hundreds of thread where people have been told by their guide that if they are willing to accept a different tire size then they can get their vehicle sooner.
7) Rivian has stated repeatedly that supply-chain problems were restricting what configurations they can ship. And while this is certainly due to more than one different part, it's also clear that tires/wheels are one of those things that are causing them difficulty.
So despite your implication, there is no doubt that the Rivian tires/wheels have a restricted supply, and that Rivian is aware of these problems and trying to make the best use of what they can get. My statement above about "supply shortages" is completely accurate and justified based on all the above facts (and more). And you should give customer service credit for correcting the problem and getting you a spare within a few weeks at extra expense to them, not berate them for poor service - there's nothing poor or sub par in what you've described.