Religions can be inconvenient. I'd still argue that source of some of their bans was convenience that just got frozen in time and kept alive way after its utility ended.

I think in case of meat bans it was a deeper convenience. Something like that it's not convenient to avoid pork, but it's convenient to not get sick from low quality pork or the process of raising this specific animal. It might have been quite convenient rule of thumb two thousand years ago.