I want an official response.

[Felessan]

Says a lot that the first major patch since the addition of the cash shop is about 2/3rds cash shop related

I like the exaggeration. Not mentioning a relic, eternal bond itself are several times bigger than all cash shop items. What do we have in cash shop? 2 dyes, some extra cutscenes, copy-pasted set of clothes (extra set looks exactly the same as usual one, just dyes differently), copy-pasted from "invite a friend" choco and one minion? It's a very pale in comparison to the scope of whole ceremony (and there are even quest before it).

It's supposed to entitle you to all the content the game has to offer

And paying 10$ at shop entitles you to everything in that shop /sarcasm

SE keeps locking out stuff that could and should be included in the subscription fee

This is a baseless assumption and wishful thinking. You just assume that this content are free or was already included into the scope of development.

To get this all started SE had to take normal sub money and pay a dev to make some cash shop items to begin with.

You don't understand how it works. Where money came from is not important, most probably than not it was funded separately and put on the separate budget at least initially. Furthermore it most probable that it is cash shop that sponsoring main development and not main development sponsor cash shop as cash shop has significantly higher margin and it usually easier to get bigger budget (even for main project) if you have bigger revenue stream.

with 2.000.000 subs per month (even with only legacy player at 9.99 euro) they get 19.980.000 euro (more of 24.700.000 USD) and it's only with the lowest subs actual, most people are not at this one and with the retainer subs it far more. do you really believe they use 24.7M USD per month in the game? really?

You should remember that ARR essentially sucked all SE money into rebuilding itself, many project went into frozen state (versus, anyone) or even was dumped. ARR cost a lot of money to be remade and people DO want to return their investment, so a lot from this number goes to recuperate R&D cost that was spent years ago.