I mean it's sad that this change will affect Termux, but at the same time I can see why Google wants to enforce W^X on apps home dirs.

This is currently a big backdoor for apps to sneak unvetted code in at runtime, bypasses Google's review policy. Sure Termux was using this for good, but I guarantee that Google has examples of apps doing this to sneak hostile code onto user devices.

Development tools often need higher security permissions on Desktop, maybe Android just needs a "development" class of app that is more privileged? They'd just need to enforce the limitation to development focused apps really strongly in the review process.