But what we don't know is how long Jack and Parag have been thinking of Parag as the new CEO. It's perfectly possible that he had significant influence here if Jack has been grooming him as CEO for a while.
[1] https://techcrunch.com/2021/02/23/the-new-new-slack-quill/
This seems like just the result of unfamiliarity with the payments domain to me, rather than "horrible" branding.
I’ve heard someone mix up Slack and Stripe. Doesn’t mean those two are bad branding. The person isn’t someone who cares about SV or startups.