Just to take on one of your points: the RAM you are talking about is not truly comparable. Sure, you can add DIMMs to a PC motherboard. M2 "unified" memory bandwidth to the on-chip RAM, LPDDR5-6400, exceeds 100Gb/sec. That's incredible bandwidth. So yes, there's a cost tradeoff, and the lack of modularity means the upgrade path is "get a new device." That's frustrating. That's actually been true of high end PCs for decades, given the constant churn in socket standards and power requirements, but fans of building their own PCs generally don't like to acknowledge it.
The criticism of the onboard flash is more valid - it's costly and if you don't get the dual bank setup, paying yes, a big premium like I did for a 512Gb version, performance isn't great. https://www.theverge.com/23220299/apple-macbook-air-m2-slow-... The lack of an upgrade path is, again, not great, but ask yourself honestly, aside from some ThinkPads which really were nicely upgreadable in the past, how many laptops are upgradeable and what can you upgrade?
Your bias ("Apple charges an absurd amount," for "tiny little features that real computers have in spades") is showing and it isn't pretty. Show us the modular laptop with comparable performance or shut up; you're stuck in the nineties.
Go on - find me a PC laptop that performs better than an M2 and let's look at prices, weight, and battery life. Oh, and modularity.
https://www.cpu-monkey.com/en/cpu_ranking-best_mobile_proces...
Or even show us your PC build that is comparable to the Mac Studio and let's talk about how big, noisy, and power-hungry it is; these are things that people who want to use real computers in real offices and studios care about, more than PC hot-rodders who, let's face it, are mostly gamers bragging to each other about their frame rates rather than professionals using computers as tools.