Reading an eBook in MoonReader is really joyful. Long HTML article are simllar to books. Is there any book reader apps that can open a web page directly?
https://getpocket.com is good indeed and it can read the pages via a decent voice generator, although the interface for it is clunky.
IMO Pocket is too often not able to process an article right. I can compare to Firefox read mode, which handles almost any text correctly, is pleasure to use but lacks the ability to store the location that you have reached so far.
Other way is to convert the page to .epub or .pdf and read it as usually.