> Now that almost all dev work is going to be remote friendly, The only advantage to freelancing that I can see is the flexibility to work less than 40 hour weeks, or take more time off than vacation time you're allotted.

Oh, there's a few more reasons: taxes (paid in arrears, after expenses), carry your own insurance/benefits (can work really well if you are young & healthy), business can own property, corporate veil, separate business finance from personal, have more than one client, etc...

> Ultimately I found the type of work companies go to freelancers for is terribly uninteresting most of the time.

Sometimes. Other times it can be better.