The thing about Swedish unions is that they only bare their teeth when someone (invariably an arrogant foreigner who thinks they know better) breaks the rules. When companies act within the letter of the law (like Spotify and Klarna doing layoffs), the unions are basically the meek doge from the meme. A company that plays by the rules (which are better than in US right-to-work states though still allow plenty of leeway for cutting your workforce) will have no trouble, other than some predictable expenses.
Also, because of this, Swedish-style unions only work in a consensus-based system (which Sweden has had since the 1930s), rather than an adversarial system like the US or UK.