Does Date.addDays() method skip the weekends based on the Org’s Business Hours settings

For example when I use Date.addDays(1) for a task's due date. I realized if the next day falls into a weekend both Sat and Sun are skipped and it adds 1 workday (which is three days count). Now, this is great cause I was thinking of how to accomplish this in the first place but when I saw this result and referred to the official date class doc I didn't find this feature being mentioned. I also checked our org's Business Hours settings and sure weekends are not set as work days. So I just came over here to get a confirmation on what I'm observing is correct and hopefully, help someone who has the same question in the future. Thanks.

Here's a sample code that shows how I'm calling the method and checking the result,

Task t = new Task(
    OwnerId = ownerId,
    Priority = 'High',
    ActivityDate = Date.today().addDays(1), //this is where I'm setting the Due Date
    WhoId = contactId,
    Type = 'Type',
    Description = 'Description',
    Subject = 'Subject',
    Status = 'Status'
);
insert t;

and to check the results I use the UI in Salesforce to navigate into the Tasks table and open this task I created above and look at the Due Date field.