I have, but it takes me back many years to some obscure situations I’ve been in. For my day to day, I can’t think of the last time I’ve encountered it, it’s been years, and I regularly am setting up new environments. That’s why I’m curious about the workflows where it matters.
I dunno, 2020? Since then I switched to mamba, then poetry, and now uv. I have spent way too much time fighting python's package managers and with uv I finally don't have to. ymmv