You don't "fall under" Part 107 once you don't meet Part 101 requirements; it's simply the only other option for lawful flight.
LOL! You can say it however you want but if there are only 2 options and if you don't meet EVERY requirement to option #1 (hobby/recreational) then like it or not you default to option #2.
If memory serves me correctly (And it's been several weeks since this came about) the FAA presenter even said, "If you don't completely fit in the Hobby/Recreational box you default to Commercial".