...is useless. Which means the comment is inaccurate. Ditto for the (3) comment; (2) and (3) are not the same.
Before you start an argument about PINB0, find the definition. Or find an example in the datasheet. Or find an example on the internet-at-large.
In case you change your mind, the final part of @GolamMostafa's post is accurate. Assign a constant to PINB where the high bits are the pins to toggle...
PINB = 0b00101010;
Bonus points if you use PINBn constants correctly.