You probably can't name a project OpenWarp for the same reason you can't name a search engine OpenGoogle, even though it's a different name to the original. In this case, it's particularly confusing because the original warp project _is_ now open source.

Definitely rude, too close to the same name. Warp just recently open sourced their client, a [not community] personal fork should be more considerate.

Try do create a game called ”Open Pokémon Go” and see if it works or not.

It is not the "open" version of Warp. Warp is already open. So the name is rude.