No, it isn't. I purposely listed various luxuries items or activities people spend extra on while others will accuse them of wasting their money. Ironically, you defeated your own argument by justifying my restaurant example. How does spending money for a perceived social status differ from spending it on an in-game item? Both are luxuries you're indulging in because you (hopefully) have the disposable income to afford it. The same applies to Enthusiast PC Builds. You're spending money on a luxury. You not finding value in the chosen luxury is irrelevant, and frankly, none of your business. Plenty of people spend money to feel better. They're not doing it for social clout, bragging rights or anything beyond "this makes me happy." I'm guilty of doing precisely that myself.
It does not matter.
You keep attaching your subjective value onto other people and their spending decisions. You feel $36 for mount is absurd because of x reason—an opinion you're certainly entitled to have. Someone else doesn't have to share your opinion. They are well aware 6.0 will likely cost only slightly more than the mount in question, or that various steam sales will offer games like Witcher 3, Total War or whatever at comparable or even lower prices. They don't care. Their hypothetical interest is in that mount. And it isn't any of your business how they choose to spend their money.
Just to hammer in this point further. Several people have pre-ordered the Omega M/F statue, myself included. At nearly $400 CAD, I could purchase Shadowbringers nearly eight times over. Cool. I want the statue. That's it. You can inform me a hundred different ways I could spend my money; telling me all this value I'll gain or that x game has story, customization and even makes me breakfast! I, with my own money, still want to purchase the statue.
Should I remind you? Price expectation essentially boils down to what you reasonably expect customers will be willing to pay. And how your prices compare to other retailers. We can throw out the latter immediately as SE is the only retailer. Which leaves us with "willingness to pay." Call me crazy but I think SE has a good idea on this already.