> The 'obscure' tools are like $5 on amazon/temu/alibaba and include exactly what you need to make the job easy for that specific model.
There are not enough reasons for every model to need a different specific set of tools. There's one common reason: to make service difficult.
> No consideration at all of tradeoffs, IE how much dust/water proofing do we lose and how much bulk/weight it will add.
Seems like it's all about tradeoffs. They're trading whatever hypothetical advances you're referring to here for less tech waste and lower consumer costs. They're deciding that it's an area in which manufacturers aren't allowed to innovate, because the innovations are trivial compared to the externalities that they impose.