It’s okay, but...

One of the great limitations of this browser is the inability to install extensions. Virtually every other browser available supports either Chrome extensions (for example, Vivaldi) or at least have their own extensions available (for example, Firefox & Opera). As a result, users have no ad-blocking options (since ad-blocking is not built into this browser) which means that users must deal with all the annoyances and potential security threats of ads.

LDMartin1959 about Sleipnir