Seems like the PlayStore team should get wiser to how OSS communities manage software releases. They should be good at this, because, you know, their platform is based on the Linux kernel.
PlayStore should enable Termux community to manage the app name, or at least be able to have a prominent link to an "official" alternative displayed on the PlayStore Termux page.
Obviously something has gone wrong between Fornwall and the rest of the team for this situation to arise. But at first sight this is not an uncommon or surprising situation to arise. I think PlayStore could do better, and Google could support the OSS ecosystem they benefit from better.