I think BPC is fine in the beginning - especially then when your body might not yet be the perfect ketone producing, low insuline resistance, perfect fat burning etc. machine it could be.
In the beginning you are getting something that will help you through 3 or 4 days of (what I guess you’d call a fat fast) with BPC each morning. That is going to help you build your fasting muscle better than quitting at the 24 hour mark because you feel too restricted or blah.
Later, after you have built the fasting muscle (the psychological part) and you want to try a longer fast - that is where it might be worth skipping BPC. When your body is a true fat burning machine, that BPC is simply getting used instead of pulling fat from your body (which is usually not desirable).