Though I wish I was entirely kidding. ~12 years ago or so we did that if one of two parallel development teams had to modify a message of the network protocol to avoid incompatibilities and merge problems.
Mind you, these were SVN merges. I can't even verbalize my feelings about SVN merges but by a mixture of laughing and groaning in pain, like if you stubbed your toe in a painful, but entirely funny way.
Git in turn made branches easier, causing merges to be more prevalent and developers overall learned to merge more, merge more often.
What types of merges are we talking about? Surely it must be where you merge in changes from a main branch to your local branch, which in the case of long-lived branches will be the more common merge. Creating new branches isn't even part of that workflow.
Its all about the regressions, not finding anything novel