What should I use for a startup going after B2B sales?

ULIDs or CUID2s for primary keys?

I remember seeing Hussein Nasser's Shopify video: https://www.youtube.com/watch?v=f53-Iw_5ucA

And it made me switch to using ULIDs instead.

I know this may fall into the "premature optimization is the root of all evils" category. But since it's straightforward, what should I do?

I've been using ULIDs in distributed systems with no problems so far.