>>51201530> 1. Physically couldn't, and may lack things like vocal cordsMeowth taught himself how to do that and established later that Pokemon just need to learn how to pronounce words as they do have a language that's understood by all other Pokemon which is apparently as complex as our language. Now of course, its possible that there are some Pokemon who just aren't capable of working their vocal cords like that (Like a Regi), but I'd hazard a large sum of them could if a non special Meowth could. A pokemon like Scorbunny, I could absolutely see being able to learn how to speak English.
> 3. They think it's unnatural or strangeSome do, most stop caring though. When Meowth speaks English most the Pokemon look at him weird or find it strange.
Besides if your goal as a Pokemon is to be seen as more than a pet or your trying to be more like a person with person level interest...it would be a good thing to lean how to speak English (or whatever language is local).