The things for me is if I go through the trouble I might just do it properly. But that I want to do even less. So then there are a lot more options on the table. If I'm really going to change things up maybe I change careers, location, study, travel or whatever. Which is probably a fallacy.
But I guess the point is that when I file those easy taxes and even tough I don't really dislike taxes or the Swedish tax system I don't think that is the whole story. If you have decent income, and mostly only income, and can't use those personal income tax deductions your tax rate is high enough (50-60% marginal) that it is quite beneficial to hire yourself through a company and get access to those other tax breaks. And if you do then you do complicated taxes (compared to personal taxes).
[0] Basically this. (It's translated to consulting but it isn't really and true for any small company). https://github-com.translate.goog/tomasbjerre/starta-eget-ko...
For tens of thousands of dollars per year, surely some tax/company admin service exists that could offload the vast majority of the tedium from you, leaving you with perhaps 10-20 hours of effort/personal attention per year. Even if they take half of the $20+K savings as their fee, that leaves you with $10+K to put in your pocket for a little over a day of total effort. That's $500-$1000 or more per hour of effort (all tax-free).
That seems like a huge overlay for you.