Realistically early access launches are just launches. Some games get a boost and surge when they go 1.0, but the vast majority don't. Using the ea tag may put more people off than the buggyness, and people forget about the game 3 years later when it hits 1.0. I think paradox knew about it and just decided it would reduce sales more then the bug reports would.

Don't get me wrong I don't think games with major bugs should be released as a 1.0 product if they are asking a high price. There are great games that started ea and became great, but it was a risk for them when they did that.