Except Paradox mention nowhere that this is a beta.
Ye, that's exactly the point I made. Which of course you didn't read, given this is a forum thread.
Assuming this is a beta, the average user has no way of knowing this when they spend their money. Again, I don't see why you support Paradox when according to your narrative, they outright lied about the state of the game, knowing full well that honesty would cost them money. At the very least, come up with a better explanation.
Again, already answered that: It's an issue, but the issue is, to me, not significant enough to stop supporting the game over. But that's a choice everyone got to make for himself.
Even more interesting it'll become when Stellaris'll inherit changes from CK2, where you must have a pdx account to switch branches
Note that the account link change are a super-clever way of avoiding the buerocratic mess that is the GDPR legislation passed in Europe.
Since you seem unaware of that, here the brief version: Any entity (.f.e Paradox) is entirely forbidden to store or use any of your (if you are within Europe, which at least some players of Stellaris are) data (f.e. user account, which is used to unlock DLCs, store savegames int he cloud or enable ironman/achievements), unless you explicitely agree to their policies by clicking a button. They can easily add that prompt (and did) to the current version of Stellaris. However, they cannot retroactively change f.e. the 1.8 version to contain that prompt. Therefore, by law, they would have to remove all older versions from being available at Steam. What they did is put those older versions behind a password, which you 'legitimately' can only obtain by linking your account, which in turn requires you to click that accept eula button in the forums. This way, they can leave the old branches up, because you have clicked that button prior to the game using your data.
GDPR is basically a kind of well-intended attempt to protect user privacy, that is however a huge pain in the ass to anyone working with any sort of data, because it was written by people who don't understand how digital media function.
So please don't make statements like the one above, which imply that Paradox is doing 'stupid things' by introducing weird account switch branch limits 'like CKII did', it's really not on them.