If I have a test harness, and LLM workflow setup, it is easier to just write new code myself. I am not giving away my "secret sauce". And I will not have a debate "why this simple feature needs 1000 new tests...", and two days just to make a full release build.

For merge I have to do 99% of work anyway (analyze, autotest, build, smoke, regression test). I usually merge smaller commits just to be polite (and not to look like one man show), but there is no way to accept large refactoring!