I’ve been using the Pleco screen reader bubble instead. It works ok because you can look up characters more quickly by tapping on the characters and the other Pleco functions are all available at the same time including save as flashcard. Then if you want to translate a whole sentence, long press the sentence instead and a menu pops up then tap on Translate and it opens the Google tap to translate half screen window with the translation.
Still need to have the Pleco bubble on screen all the time but its far less intrusive as the Google bubble and a lot more powerful than just using Google tap to translate.
I have the paid Pleco bundle so Im not sure if that helps all that work.