[bullet points]

Damn. Now I want a solarpunk isekai.

I am sure it would not sit well with test audiences since no one likes being told their culture is bad, but even Earth cultures are incompatible across sufficient geographic distances and spans of history.

I have a personal example confirming that:

When I started cooking Japanese dishes at home, some of my folks here found the Japanese savoury dishes too sweet, and they liked them better when I subbed ginger for black+red pepper. To make it less exotic, more similar to what they typically eat.

And yet they live in the same world and the time period as people who live with those dishes, whom mirin (the sweet ingredient) is part of a holy trinity!

Is Japanese food bad? Fuck no! (At least for me. I cook it for a reason.) But for people in isekai, Japanese dishes wouldn’t be just “exotic”, they’re alien. Getting everyone to say “omaaaae! oishiiiiii!” because the MC prepared something from Japan feels silly.