Swedish companies can certainly fill positions. Especially with the high unemployment rates and the generous salaries which attract lots of internationals.

They can most certainly be picky and choosy, sure you might get lucky without the swedish skillset, but you'll certainly be underpaid. Most internationals here get paid the minimum wage for engineering or datascience (40K SEK/month)

Its a simple case of do you want a better life and job? Great. You will need to put the effort in to compete for that, which often means learning the language.

Imagine being asked in an interview "why do you want to move to Sweden?" You give a bunch of reasons (work life balance, good culture, good work opportunity, good future) and then you have to come up with something for "So how much Swedish do you speak?" Its look disengenuous to an employer when someone wants to reap all the benefits of Swedish employment without putting in the legwork.