Hey Chris,
I am mainly working on a HP ZBook Pro with USBC Thunderbolt ports.
I don’t really notice whether my external device are USB or Thunderbolt, as the USBC interface is fast enough for most of the work that I do.
Adding, that for editing I use my internal SSD’s, and rarely connect to an external drive unless it is for backing up or moving a project back into Post.
Rather than getting stuck on one or the other, I think that your main point is that Mac has a limited amount of ports, without the ability to expand the hardware. Adding, that if you are really unlucky and don’t “eject” your drive before unplugging, you can run the risk of losing data.
So having all your drives connected to a break-out box might not be a bad thing, regardless of being USBC only, or with Thunderbolt.
However, there are smarter people around here, including Bob Zelin, who will rightfully ask about your back-up and disaster recovery. As if you have all your eggs in one basket, or sitting on one connection as it would be, they could all fail spectacularly simultaneously.