1. That is true whether you WFH or not.

2. As a contractor, yes, As an employee WFH changes nothing here, particularly in countries with worker favorable employment laws.

3. See 1.

4. True, remote workers need to maintain a 9-5ish routine. meaning that remote means you can be flexible about which 8 hours you work, but you should still stick to the 8 hours you are paid for

5. True, but you now have more time to find a social group to join, closer to home and more into things your interested in outside of work.