There are people working on this: https://webos-ports.org

A few years ago I was in contact with someone from the project to integrate the changes that I did, so their messaging client should now support pretty much everything that Pidgin supports (which, as I learned today, nowadays includes Matrix, Signal, Telegram and Steam as well through plugins).

Maybe I should install that on my old Nexus 4 and see how far they got... :)