I also use Twilio for a hobby project. When the 10DLC changes came down I found it pretty confusing. I was able to keep my current pricing by purchasing a toll free number (trivial cost) and filling out a Word doc explaining how my website meetings some basic requirements (users opt in for SMS, theres a way to unsubscribe, etc)

I wrote about my experience on reddit: https://old.reddit.com/r/twilio/comments/z9q3i1/10dlc_confus...