I would be curious to know in which specific cases people which have experience with using both think plain git is still better.
In my experience, when using jujutsu it can be necessary to use git commands to access repos via ssh, vpn and such. Also, jujutsu ignores git submodules, so one has to do submodule operations with git (but I think that culturally, using submodules most often is not such a good idea).