Hiya, thanks for sharing your thoughts too 
I don’t think ppl there are better in general, but I think ppl there have more opportunities to contact foreigners. For example, some Taiwanese living in some cities have only seen less than 5 foreigners in their hometown. So when they meet or even just see (sorry I don’t know how to express better) them, they feel curious. And normally Taiwanese won’t talk to strangers (in my opinion, only if you look like you need help🤣). All the things that we know about some specific countries are from local news, very low quality news or even……the fake news🥲 We have so many stereotypes on many countries (it’s so terrible I know but it’s true, ppl here really need to be educated on this point) So I think if foreigners don’t feel welcomed or face some challenges, at first maybe they can move to the places where lots of foreigners have same situations, then when they meet more ppl (foreigners or locals), they may get used to the culture more here and can try to more some other places?
I used to live in the UK for 3 years and tbh sometimes I don’t feel welcomed. I chose to hang out with my Taiwanese friends first, then when I got more energy?! I started socialising with local ppl again. I think the key thing is taking care of our (mental) health, instead of being inclusive in the local culture.
At last, I live in Xinzhuang and am trying to find the language exchange partner (English - Mandarin/台語), so if @DunderMifflin still want to have a partner of language exchange, or just want to have a drink, please feel free to contact me 
Still hope everything enjoy their times in Taiwan!!